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142247180 = 225231092837
BaseRepresentation
bin10000111101010…
…00010100001100
3100220122220110002
420132220110030
5242403402210
622040503432
73345036545
oct1036502414
9326586402
10142247180
1173327459
123b77ab78
132361613a
1414c6b4cc
15c74c4a5
hex87a850c

142247180 has 48 divisors (see below), whose sum is σ = 314677440. Its totient is φ = 53906688.

The previous prime is 142247153. The next prime is 142247197. The reversal of 142247180 is 81742241.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48722 + ... + 51558.

It is an arithmetic number, because the mean of its divisors is an integer number (6555780).

Almost surely, 2142247180 is an apocalyptic number.

142247180 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 142247180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157338720).

142247180 is an abundant number, since it is smaller than the sum of its proper divisors (172430260).

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

142247180 is a wasteful number, since it uses less digits than its factorization.

142247180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978 (or 2976 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 142247180 is about 11926.7422207408. The cubic root of 142247180 is about 522.0128836189.

The spelling of 142247180 in words is "one hundred forty-two million, two hundred forty-seven thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 23 46 92 109 115 218 230 436 460 545 1090 2180 2507 2837 5014 5674 10028 11348 12535 14185 25070 28370 50140 56740 65251 130502 261004 309233 326255 618466 652510 1236932 1305020 1546165 3092330 6184660 7112359 14224718 28449436 35561795 71123590 142247180