123302432202421 has 8 divisors (see below), whose sum is σ = 129723587209944. Its totient is φ = 117043838081280.

The previous prime is 123302432202379. The next prime is 123302432202457. The reversal of 123302432202421 is 124202234203321.

It can be written as a sum of positive squares in 4 ways, for example, as 110746521796 + 123191685680625 = 332786^2 + 11099175^2 .

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

It is not a de Polignac number, because 123302432202421 - 2⁹ = 123302432201909 is a prime.

It is a super-2 number, since 2×123302432202421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123302432202821) 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, 40640220040 + ... + 40640223073.

It is an arithmetic number, because the mean of its divisors is an integer number (16215448401243).

Almost surely, 2^{123302432202421} is an apocalyptic number.

It is an amenable number.

123302432202421 is a deficient number, since it is larger than the sum of its proper divisors (6421155007523).

123302432202421 is an equidigital number, since it uses as much as digits as its factorization.

123302432202421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81280443191.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 123302432202421 its reverse (124202234203321), we get a palindrome (247504666405742).

The spelling of 123302432202421 in words is "one hundred twenty-three trillion, three hundred two billion, four hundred thirty-two million, two hundred two thousand, four hundred twenty-one".