30556421125442 has 4 divisors (see below), whose sum is σ = 45834631688166. Its totient is φ = 15278210562720.

The previous prime is 30556421125429. The next prime is 30556421125487. The reversal of 30556421125442 is 24452112465503.

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., 19810947000601 + 10745474124841 = 4450949^2 + 3278029^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30556421125393 and 30556421125402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7639105281359 + ... + 7639105281362.

Almost surely, 2^{30556421125442} is an apocalyptic number.

30556421125442 is a deficient number, since it is larger than the sum of its proper divisors (15278210562724).

30556421125442 is a wasteful number, since it uses less digits than its factorization.

30556421125442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15278210562723.

The product of its (nonzero) digits is 1152000, while the sum is 44.

The spelling of 30556421125442 in words is "thirty trillion, five hundred fifty-six billion, four hundred twenty-one million, one hundred twenty-five thousand, four hundred forty-two".