42956136 has 64 divisors (see below), whose sum is σ = 121046400. Its totient is φ = 14112000.

The previous prime is 42956119. The next prime is 42956141. The reversal of 42956136 is 63165924.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42956136.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13936 + ... + 16736.

It is an arithmetic number, because the mean of its divisors is an integer number (1891350).

Almost surely, 2^42956136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42956136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60523200).

42956136 is an abundant number, since it is smaller than the sum of its proper divisors (78090264).

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

42956136 is a wasteful number, since it uses less digits than its factorization.

42956136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887 (or 2877 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 42956136 is about 6554.0930722717. The cubic root of 42956136 is about 350.2206391117.

It can be divided in two parts, 429 and 56136, that added together give a palindrome (56565).

The spelling of 42956136 in words is "forty-two million, nine hundred fifty-six thousand, one hundred thirty-six".