40942656 has 42 divisors (see below), whose sum is σ = 117356382. Its totient is φ = 13647360.

The previous prime is 40942631. The next prime is 40942669. The reversal of 40942656 is 65624904.

It can be written as a sum of positive squares in only one way, i.e., 38937600 + 2005056 = 6240^2 + 1416^2 .

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 40942656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34965 + ... + 36116.

Almost surely, 2^40942656 is an apocalyptic number.

It is an amenable number.

40942656 is an abundant number, since it is smaller than the sum of its proper divisors (76413726).

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

40942656 is a wasteful number, since it uses less digits than its factorization.

40942656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71099 (or 71086 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 40942656 is about 6398.6448565302. The cubic root of 40942656 is about 344.6608892194.

The spelling of 40942656 in words is "forty million, nine hundred forty-two thousand, six hundred fifty-six".