42155156520 has 48 divisors (see below), whose sum is σ = 137004259860. Its totient is φ = 11241374976.

The previous prime is 42155156507. The next prime is 42155156557. The reversal of 42155156520 is 2565155124.

42155156520 is a `hidden beast` number, since 4 + 2 + 1 + 551 + 56 + 52 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37194208164 + 4960948356 = 192858^2 + 70434^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 58548469 + ... + 58549188.

Almost surely, 2^42155156520 is an apocalyptic number.

42155156520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42155156520 is an abundant number, since it is smaller than the sum of its proper divisors (94849103340).

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

42155156520 is a wasteful number, since it uses less digits than its factorization.

42155156520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117097674 (or 117097667 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 42155156520 in words is "forty-two billion, one hundred fifty-five million, one hundred fifty-six thousand, five hundred twenty".