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141220720 = 2452922099
BaseRepresentation
bin10000110101011…
…01101101110000
3100211201202102001
420122231231300
5242123030340
622002503344
73333233134
oct1032555560
9324652361
10141220720
1172796243
123b364b54
1323346b74
1414a813c4
15c5e829a
hex86adb70

141220720 has 60 divisors (see below), whose sum is σ = 340212600. Its totient is φ = 54514432.

The previous prime is 141220693. The next prime is 141220741. The reversal of 141220720 is 27022141.

It is a happy number.

141220720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66231 + ... + 68329.

It is an arithmetic number, because the mean of its divisors is an integer number (5670210).

Almost surely, 2141220720 is an apocalyptic number.

141220720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 141220720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170106300).

141220720 is an abundant number, since it is smaller than the sum of its proper divisors (198991880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

141220720 is a wasteful number, since it uses less digits than its factorization.

141220720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170 (or 2135 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 141220720 is about 11883.6324413035. The cubic root of 141220720 is about 520.7542309450.

Adding to 141220720 its reverse (27022141), we get a palindrome (168242861).

The spelling of 141220720 in words is "one hundred forty-one million, two hundred twenty thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 29 40 58 80 116 145 232 290 464 580 841 1160 1682 2099 2320 3364 4198 4205 6728 8396 8410 10495 13456 16792 16820 20990 33584 33640 41980 60871 67280 83960 121742 167920 243484 304355 486968 608710 973936 1217420 1765259 2434840 3530518 4869680 7061036 8826295 14122072 17652590 28244144 35305180 70610360 141220720