40542656 has 112 divisors (see below), whose sum is σ = 105826560. Its totient is φ = 14929920.

The previous prime is 40542653. The next prime is 40542661. The reversal of 40542656 is 65624504.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40542653) 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, 93416 + ... + 93848.

It is an arithmetic number, because the mean of its divisors is an integer number (944880).

Almost surely, 2^40542656 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 40542656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52913280).

40542656 is an abundant number, since it is smaller than the sum of its proper divisors (65283904).

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

40542656 is a wasteful number, since it uses less digits than its factorization.

40542656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 40542656 is about 6367.3115205713. The cubic root of 40542656 is about 343.5347957240.

The spelling of 40542656 in words is "forty million, five hundred forty-two thousand, six hundred fifty-six".