75424 has 12 divisors (see below), whose sum is σ = 148554. Its totient is φ = 37696.

The previous prime is 75407. The next prime is 75431. The reversal of 75424 is 42457.

It can be written as a sum of positive squares in only one way, i.e., 71824 + 3600 = 268^2 + 60^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75395 and 75404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1147 + ... + 1210.

2⁷⁵⁴²⁴ is an apocalyptic number.

It is an amenable number.

75424 is a deficient number, since it is larger than the sum of its proper divisors (73130).

75424 is a wasteful number, since it uses less digits than its factorization.

75424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367 (or 2359 counting only the distinct ones).

The product of its digits is 1120, while the sum is 22.

The square root of 75424 is about 274.6343023003. The cubic root of 75424 is about 42.2509540767.

The spelling of 75424 in words is "seventy-five thousand, four hundred twenty-four".