124238021 has 8 divisors (see below), whose sum is σ = 125730144. Its totient is φ = 122752240.

The previous prime is 124237961. The next prime is 124238041. The reversal of 124238021 is 120832421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 124238021 - 2¹⁴ = 124221637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124238041) 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, 46091 + ... + 48711.

It is an arithmetic number, because the mean of its divisors is an integer number (15716268).

Almost surely, 2^124238021 is an apocalyptic number.

It is an amenable number.

124238021 is a deficient number, since it is larger than the sum of its proper divisors (1492123).

124238021 is a wasteful number, since it uses less digits than its factorization.

124238021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 124238021 is about 11146.2110602662. The cubic root of 124238021 is about 498.9819565820.

The spelling of 124238021 in words is "one hundred twenty-four million, two hundred thirty-eight thousand, twenty-one".