40143752 has 32 divisors (see below), whose sum is σ = 82399680. Its totient is φ = 18183360.

The previous prime is 40143731. The next prime is 40143757. The reversal of 40143752 is 25734104.

It is a super-2 number, since 2×40143752² = 3223041649275008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40143757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32213 + ... + 33435.

It is an arithmetic number, because the mean of its divisors is an integer number (2574990).

Almost surely, 2^40143752 is an apocalyptic number.

It is an amenable number.

40143752 is an abundant number, since it is smaller than the sum of its proper divisors (42255928).

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

40143752 is a wasteful number, since it uses less digits than its factorization.

40143752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 40143752 is about 6335.9097215791. The cubic root of 40143752 is about 342.4043869718.

Adding to 40143752 its reverse (25734104), we get a palindrome (65877856).

The spelling of 40143752 in words is "forty million, one hundred forty-three thousand, seven hundred fifty-two".