7404138 has 24 divisors (see below), whose sum is σ = 18334368. Its totient is φ = 2115432.

The previous prime is 7404101. The next prime is 7404161. The reversal of 7404138 is 8314047.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29256 + ... + 29507.

It is an arithmetic number, because the mean of its divisors is an integer number (763932).

Almost surely, 2^7404138 is an apocalyptic number.

7404138 is an abundant number, since it is smaller than the sum of its proper divisors (10930230).

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

7404138 is a wasteful number, since it uses less digits than its factorization.

7404138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58778 (or 58775 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 7404138 is about 2721.0545749764. The cubic root of 7404138 is about 194.9058322447.

Subtracting 7404138 from its reverse (8314047), we obtain a palindrome (909909).

The spelling of 7404138 in words is "seven million, four hundred four thousand, one hundred thirty-eight".