75420455424 has 40 divisors (see below), whose sum is σ = 200924811120. Its totient is φ = 25140151296.

The previous prime is 75420455417. The next prime is 75420455431. The reversal of 75420455424 is 42455402457.

It is an interprime number because it is at equal distance from previous prime (75420455417) and next prime (75420455431).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24549394 + ... + 24552465.

It is an arithmetic number, because the mean of its divisors is an integer number (5023120278).

Almost surely, 2^75420455424 is an apocalyptic number.

It is an amenable number.

75420455424 is an abundant number, since it is smaller than the sum of its proper divisors (125504355696).

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

75420455424 is an equidigital number, since it uses as much as digits as its factorization.

75420455424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49101880 (or 49101864 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 42.

It can be divided in two parts, 754204 and 55424, that added together give a triangular number (809628 = T₁₂₇₂).

The spelling of 75420455424 in words is "seventy-five billion, four hundred twenty million, four hundred fifty-five thousand, four hundred twenty-four".