123053405440021 has 8 divisors (see below), whose sum is σ = 148034171958080. Its totient is φ = 99923066071488.

The previous prime is 123053405439971. The next prime is 123053405440039. The reversal of 123053405440021 is 120044504350321.

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 123053405440021 - 2⁹ = 123053405439509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123053405440061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462606787236 + ... + 462606787501.

It is an arithmetic number, because the mean of its divisors is an integer number (18504271494760).

Almost surely, 2^{123053405440021} is an apocalyptic number.

It is an amenable number.

123053405440021 is a deficient number, since it is larger than the sum of its proper divisors (24980766518059).

123053405440021 is an equidigital number, since it uses as much as digits as its factorization.

123053405440021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925213574763.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 123053405440021 its reverse (120044504350321), we get a palindrome (243097909790342).

The spelling of 123053405440021 in words is "one hundred twenty-three trillion, fifty-three billion, four hundred five million, four hundred forty thousand, twenty-one".