40143232 has 16 divisors (see below), whose sum is σ = 79973100. Its totient is φ = 20071552.

The previous prime is 40143227. The next prime is 40143241. The reversal of 40143232 is 23234104.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×40143232² = 3222958150811648, 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 as a sum of consecutive naturals, namely, 156682 + ... + 156937.

Almost surely, 2^40143232 is an apocalyptic number.

It is an amenable number.

40143232 is a deficient number, since it is larger than the sum of its proper divisors (39829868).

40143232 is an equidigital number, since it uses as much as digits as its factorization.

40143232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313633 (or 313621 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40143232 is about 6335.8686855079. The cubic root of 40143232 is about 342.4029085263.

Adding to 40143232 its reverse (23234104), we get a palindrome (63377336).

The spelling of 40143232 in words is "forty million, one hundred forty-three thousand, two hundred thirty-two".