124251152421 has 16 divisors (see below), whose sum is σ = 186558916608. Its totient is φ = 72874575600.

The previous prime is 124251152419. The next prime is 124251152453.

124251152421 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 124251152421 - 2¹ = 124251152419 is a prime.

It is a super-2 number, since 2×124251152421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124251153421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60727791 + ... + 60729836.

It is an arithmetic number, because the mean of its divisors is an integer number (11659932288).

Almost surely, 2^124251152421 is an apocalyptic number.

124251152421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

124251152421 is a deficient number, since it is larger than the sum of its proper divisors (62307764187).

124251152421 is a wasteful number, since it uses less digits than its factorization.

124251152421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121457672.

The product of its digits is 6400, while the sum is 30.

It can be divided in two parts, 124251 and 152421, that added together give a palindrome (276672).

The spelling of 124251152421 in words is "one hundred twenty-four billion, two hundred fifty-one million, one hundred fifty-two thousand, four hundred twenty-one".