124014240021 has 16 divisors (see below), whose sum is σ = 189048240128. Its totient is φ = 70837470000.

The previous prime is 124014240011. The next prime is 124014240037. The reversal of 124014240021 is 120042410421.

It is not a de Polignac number, because 124014240021 - 2¹⁵ = 124014207253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124014240021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124014240011) 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, 1103905 + ... + 1211046.

It is an arithmetic number, because the mean of its divisors is an integer number (11815515008).

Almost surely, 2^124014240021 is an apocalyptic number.

It is an amenable number.

124014240021 is a deficient number, since it is larger than the sum of its proper divisors (65034000107).

124014240021 is a wasteful number, since it uses less digits than its factorization.

124014240021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2317512.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 124014240021 its reverse (120042410421), we get a palindrome (244056650442).

The spelling of 124014240021 in words is "one hundred twenty-four billion, fourteen million, two hundred forty thousand, twenty-one".