75470405242 has 4 divisors (see below), whose sum is σ = 113205607866. Its totient is φ = 37735202620.

The previous prime is 75470405207. The next prime is 75470405341. The reversal of 75470405242 is 24250407457.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74398563121 + 1071842121 = 272761^2 + 32739^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 75470405195 and 75470405204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18867601309 + ... + 18867601312.

Almost surely, 2^75470405242 is an apocalyptic number.

75470405242 is a deficient number, since it is larger than the sum of its proper divisors (37735202624).

75470405242 is a wasteful number, since it uses less digits than its factorization.

75470405242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37735202623.

The product of its (nonzero) digits is 313600, while the sum is 40.

The spelling of 75470405242 in words is "seventy-five billion, four hundred seventy million, four hundred five thousand, two hundred forty-two".