123421464124321 has 24 divisors (see below), whose sum is σ = 142843839868800. Its totient is φ = 106264626098400.

The previous prime is 123421464124313. The next prime is 123421464124327.

123421464124321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 123421464124321 - 2³ = 123421464124313 is a prime.

It is a super-2 number, since 2×123421464124321² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123421464124327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129145 + ... + 15711766.

It is an arithmetic number, because the mean of its divisors is an integer number (5951826661200).

Almost surely, 2^{123421464124321} is an apocalyptic number.

123421464124321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123421464124321 is a deficient number, since it is larger than the sum of its proper divisors (19422375744479).

123421464124321 is a wasteful number, since it uses less digits than its factorization.

123421464124321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15844341 (or 15844330 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The spelling of 123421464124321 in words is "one hundred twenty-three trillion, four hundred twenty-one billion, four hundred sixty-four million, one hundred twenty-four thousand, three hundred twenty-one".