40042872 has 48 divisors (see below), whose sum is σ = 110766240. Its totient is φ = 13062528.

The previous prime is 40042853. The next prime is 40042883. The reversal of 40042872 is 27824004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2533 + ... + 9300.

It is an arithmetic number, because the mean of its divisors is an integer number (2307630).

Almost surely, 2^40042872 is an apocalyptic number.

It is an amenable number.

40042872 is an abundant number, since it is smaller than the sum of its proper divisors (70723368).

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

40042872 is a wasteful number, since it uses less digits than its factorization.

40042872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11892 (or 11885 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 40042872 is about 6327.9437418485. The cubic root of 40042872 is about 342.1173291905.

Adding to 40042872 its reverse (27824004), we get a palindrome (67866876).

The spelling of 40042872 in words is "forty million, forty-two thousand, eight hundred seventy-two".