75057420 has 48 divisors (see below), whose sum is σ = 213308928. Its totient is φ = 19715520.

The previous prime is 75057407. The next prime is 75057457. The reversal of 75057420 is 2475057.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5316 + ... + 13355.

It is an arithmetic number, because the mean of its divisors is an integer number (4443936).

Almost surely, 2^75057420 is an apocalyptic number.

It is an amenable number.

75057420 is an abundant number, since it is smaller than the sum of its proper divisors (138251508).

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

75057420 is a wasteful number, since it uses less digits than its factorization.

75057420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18750 (or 18748 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 75057420 is about 8663.5685488141. The cubic root of 75057420 is about 421.8239272055.

The spelling of 75057420 in words is "seventy-five million, fifty-seven thousand, four hundred twenty".