75421404 has 36 divisors (see below), whose sum is σ = 191833096. Its totient is φ = 24984288.

The previous prime is 75421399. The next prime is 75421421. The reversal of 75421404 is 40412457.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 559 + ... + 12294.

Almost surely, 2^75421404 is an apocalyptic number.

It is an amenable number.

75421404 is an abundant number, since it is smaller than the sum of its proper divisors (116411692).

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

75421404 is a wasteful number, since it uses less digits than its factorization.

75421404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13026 (or 13021 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 75421404 is about 8684.5497292606. The cubic root of 75421404 is about 422.5046932943.

The spelling of 75421404 in words is "seventy-five million, four hundred twenty-one thousand, four hundred four".