123001420544555 has 8 divisors (see below), whose sum is σ = 168687662461152. Its totient is φ = 84343831230528.

The previous prime is 123001420544467. The next prime is 123001420544567. The reversal of 123001420544555 is 555445024100321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123001420544555 - 2¹⁰ = 123001420543531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1757163150602 + ... + 1757163150671.

It is an arithmetic number, because the mean of its divisors is an integer number (21085957807644).

Almost surely, 2^{123001420544555} is an apocalyptic number.

123001420544555 is a deficient number, since it is larger than the sum of its proper divisors (45686241916597).

123001420544555 is an equidigital number, since it uses as much as digits as its factorization.

123001420544555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514326301285.

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 123001420544555 its reverse (555445024100321), we get a palindrome (678446444644876).

The spelling of 123001420544555 in words is "one hundred twenty-three trillion, one billion, four hundred twenty million, five hundred forty-four thousand, five hundred fifty-five".