40143056 has 20 divisors (see below), whose sum is σ = 78550404. Its totient is φ = 19872000.

The previous prime is 40143041. The next prime is 40143079. The reversal of 40143056 is 65034104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21307456 + 18835600 = 4616^2 + 4340^2 .

It is a super-2 number, since 2×40143056² = 3222929890038272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10805 + ... + 14036.

Almost surely, 2^40143056 is an apocalyptic number.

It is an amenable number.

40143056 is a deficient number, since it is larger than the sum of its proper divisors (38407348).

40143056 is a wasteful number, since it uses less digits than its factorization.

40143056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24950 (or 24944 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 40143056 is about 6335.8547963160. The cubic root of 40143056 is about 342.4024081264.

The spelling of 40143056 in words is "forty million, one hundred forty-three thousand, fifty-six".