124023021 has 16 divisors (see below), whose sum is σ = 170142336. Its totient is φ = 80323776.

The previous prime is 124023017. The next prime is 124023043. The reversal of 124023021 is 120320421.

It is not a de Polignac number, because 124023021 - 2² = 124023017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124023821) 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, 12591 + ... + 20163.

It is an arithmetic number, because the mean of its divisors is an integer number (10633896).

Almost surely, 2^124023021 is an apocalyptic number.

It is an amenable number.

124023021 is a deficient number, since it is larger than the sum of its proper divisors (46119315).

124023021 is a wasteful number, since it uses less digits than its factorization.

124023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7732.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 124023021 is about 11136.5623511028. The cubic root of 124023021 is about 498.6939527851.

Adding to 124023021 its reverse (120320421), we get a palindrome (244343442).

The spelling of 124023021 in words is "one hundred twenty-four million, twenty-three thousand, twenty-one".