40542512 has 20 divisors (see below), whose sum is σ = 79500120. Its totient is φ = 20026368.

The previous prime is 40542503. The next prime is 40542517. The reversal of 40542512 is 21524504.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40542517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13937 + ... + 16592.

It is an arithmetic number, because the mean of its divisors is an integer number (3975006).

Almost surely, 2^40542512 is an apocalyptic number.

It is an amenable number.

40542512 is a deficient number, since it is larger than the sum of its proper divisors (38957608).

40542512 is a wasteful number, since it uses less digits than its factorization.

40542512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30620 (or 30614 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 40542512 is about 6367.3002128061. The cubic root of 40542512 is about 343.5343889995.

The spelling of 40542512 in words is "forty million, five hundred forty-two thousand, five hundred twelve".