75420252 has 18 divisors (see below), whose sum is σ = 190645728. Its totient is φ = 25140072.

The previous prime is 75420239. The next prime is 75420277. The reversal of 75420252 is 25202457.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1047468 + ... + 1047539.

Almost surely, 2^75420252 is an apocalyptic number.

It is an amenable number.

75420252 is an abundant number, since it is smaller than the sum of its proper divisors (115225476).

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

75420252 is a wasteful number, since it uses less digits than its factorization.

75420252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095017 (or 2095012 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 75420252 is about 8684.4834043252. The cubic root of 75420252 is about 422.5025421459.

The spelling of 75420252 in words is "seventy-five million, four hundred twenty thousand, two hundred fifty-two".