124354431321 has 16 divisors (see below), whose sum is σ = 166368316800. Its totient is φ = 82622187648.

The previous prime is 124354431319. The next prime is 124354431337. The reversal of 124354431321 is 123134453421.

It is not a de Polignac number, because 124354431321 - 2¹ = 124354431319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (124354431521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1096215 + ... + 1204323.

It is an arithmetic number, because the mean of its divisors is an integer number (10398019800).

Almost surely, 2^124354431321 is an apocalyptic number.

It is an amenable number.

124354431321 is a deficient number, since it is larger than the sum of its proper divisors (42013885479).

124354431321 is a wasteful number, since it uses less digits than its factorization.

124354431321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109408.

The product of its digits is 34560, while the sum is 33.

Adding to 124354431321 its reverse (123134453421), we get a palindrome (247488884742).

The spelling of 124354431321 in words is "one hundred twenty-four billion, three hundred fifty-four million, four hundred thirty-one thousand, three hundred twenty-one".