120426555344521 has 4 divisors (see below), whose sum is σ = 120767707059732. Its totient is φ = 120085403629312.

The previous prime is 120426555344509. The next prime is 120426555344551. The reversal of 120426555344521 is 125443555624021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 82133528190025 + 38293027154496 = 9062755^2 + 6188136^2 .

It is a cyclic number.

It is not a de Polignac number, because 120426555344521 - 2⁹ = 120426555344009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120426555344551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170575857076 + ... + 170575857781.

It is an arithmetic number, because the mean of its divisors is an integer number (30191926764933).

Almost surely, 2^{120426555344521} is an apocalyptic number.

It is an amenable number.

120426555344521 is a deficient number, since it is larger than the sum of its proper divisors (341151715211).

120426555344521 is an equidigital number, since it uses as much as digits as its factorization.

120426555344521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341151715210.

The product of its (nonzero) digits is 5760000, while the sum is 49.

The spelling of 120426555344521 in words is "one hundred twenty trillion, four hundred twenty-six billion, five hundred fifty-five million, three hundred forty-four thousand, five hundred twenty-one".