40143975 has 24 divisors (see below), whose sum is σ = 68663760. Its totient is φ = 20670720.

The previous prime is 40143967. The next prime is 40143989. The reversal of 40143975 is 57934104.

It is not a de Polignac number, because 40143975 - 2³ = 40143967 is a prime.

It is a super-2 number, since 2×40143975² = 3223077457601250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7054 + ... + 11403.

It is an arithmetic number, because the mean of its divisors is an integer number (2860990).

Almost surely, 2^40143975 is an apocalyptic number.

40143975 is a deficient number, since it is larger than the sum of its proper divisors (28519785).

40143975 is a wasteful number, since it uses less digits than its factorization.

40143975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18499 (or 18494 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 40143975 is about 6335.9273196589. The cubic root of 40143975 is about 342.4050209935.

The spelling of 40143975 in words is "forty million, one hundred forty-three thousand, nine hundred seventy-five".