40442432 has 14 divisors (see below), whose sum is σ = 80253078. Its totient is φ = 20221184.

The previous prime is 40442429. The next prime is 40442447. The reversal of 40442432 is 23424404.

It can be written as a sum of positive squares in only one way, i.e., 39639616 + 802816 = 6296^2 + 896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40442398 and 40442407.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315893 + ... + 316020.

Almost surely, 2^40442432 is an apocalyptic number.

It is an amenable number.

40442432 is a deficient number, since it is larger than the sum of its proper divisors (39810646).

40442432 is an equidigital number, since it uses as much as digits as its factorization.

40442432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631925 (or 631915 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 40442432 is about 6359.4364530200. The cubic root of 40442432 is about 343.2514822529.

Adding to 40442432 its reverse (23424404), we get a palindrome (63866836).

The spelling of 40442432 in words is "forty million, four hundred forty-two thousand, four hundred thirty-two".