42503744 has 14 divisors (see below), whose sum is σ = 84343494. Its totient is φ = 21251840.

The previous prime is 42503633. The next prime is 42503749. The reversal of 42503744 is 44730524.

It can be written as a sum of positive squares in only one way, i.e., 42094144 + 409600 = 6488^2 + 640^2 .

It is not an unprimeable number, because it can be changed into a prime (42503749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331997 + ... + 332124.

Almost surely, 2^42503744 is an apocalyptic number.

It is an amenable number.

42503744 is a deficient number, since it is larger than the sum of its proper divisors (41839750).

42503744 is an equidigital number, since it uses as much as digits as its factorization.

42503744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664133 (or 664123 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 42503744 is about 6519.4895505707. The cubic root of 42503744 is about 348.9868496398.

The spelling of 42503744 in words is "forty-two million, five hundred three thousand, seven hundred forty-four".