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142573780 = 225232811103
BaseRepresentation
bin10000111111110…
…00000011010100
3100221021111110101
420133320003110
5242444330110
622051503444
73350566666
oct1037700324
9327244411
10142573780
117352a878
123b8b7b84
13236cb9ab
1414d14536
15c7b413a
hex87f80d4

142573780 has 48 divisors (see below), whose sum is σ = 313818624. Its totient is φ = 54306560.

The previous prime is 142573771. The next prime is 142573807. The reversal of 142573780 is 87375241.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128709 + ... + 129811.

It is an arithmetic number, because the mean of its divisors is an integer number (6537888).

Almost surely, 2142573780 is an apocalyptic number.

142573780 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 142573780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156909312).

142573780 is an abundant number, since it is smaller than the sum of its proper divisors (171244844).

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

142573780 is a wasteful number, since it uses less digits than its factorization.

142573780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416 (or 1414 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 142573780 is about 11940.4262905476. The cubic root of 142573780 is about 522.4120926872.

The spelling of 142573780 in words is "one hundred forty-two million, five hundred seventy-three thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 281 460 562 1103 1124 1405 2206 2810 4412 5515 5620 6463 11030 12926 22060 25369 25852 32315 50738 64630 101476 126845 129260 253690 309943 507380 619886 1239772 1549715 3099430 6198860 7128689 14257378 28514756 35643445 71286890 142573780