123440053220421 has 8 divisors (see below), whose sum is σ = 188099128716864. Its totient is φ = 70537173268800.

The previous prime is 123440053220381. The next prime is 123440053220509. The reversal of 123440053220421 is 124022350044321.

It is a happy number.

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

It is not a de Polignac number, because 123440053220421 - 2¹⁵ = 123440053187653 is a prime.

It is a super-2 number, since 2×123440053220421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123440053230421) 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, 2939048886180 + ... + 2939048886221.

It is an arithmetic number, because the mean of its divisors is an integer number (23512391089608).

Almost surely, 2^{123440053220421} is an apocalyptic number.

It is an amenable number.

123440053220421 is a deficient number, since it is larger than the sum of its proper divisors (64659075496443).

123440053220421 is an equidigital number, since it uses as much as digits as its factorization.

123440053220421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878097772411.

The product of its (nonzero) digits is 46080, while the sum is 33.

The spelling of 123440053220421 in words is "one hundred twenty-three trillion, four hundred forty billion, fifty-three million, two hundred twenty thousand, four hundred twenty-one".