156636042 has 32 divisors (see below), whose sum is σ = 317096640. Its totient is φ = 51578880.

The previous prime is 156636001. The next prime is 156636043. The reversal of 156636042 is 240636651.

It is a super-3 number, since 3×156636042³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 156635994 and 156636012.

It is not an unprimeable number, because it can be changed into a prime (156636043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244042 + ... + 244682.

It is an arithmetic number, because the mean of its divisors is an integer number (9909270).

Almost surely, 2^156636042 is an apocalyptic number.

156636042 is an abundant number, since it is smaller than the sum of its proper divisors (160460598).

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

156636042 is a wasteful number, since it uses less digits than its factorization.

156636042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 156636042 is about 12515.4321539450. The cubic root of 156636042 is about 539.0518822475.

The spelling of 156636042 in words is "one hundred fifty-six million, six hundred thirty-six thousand, forty-two".