23124004021 has 8 divisors (see below), whose sum is σ = 23930080920. Its totient is φ = 22318507008.

The previous prime is 23124004019. The next prime is 23124004031. The reversal of 23124004021 is 12040042132.

It can be written as a sum of positive squares in 4 ways, for example, as 398441521 + 22725562500 = 19961^2 + 150750^2 .

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 23124004021 - 2¹ = 23124004019 is a prime.

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 23124004021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23124004031) 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, 63036 + ... + 224101.

It is an arithmetic number, because the mean of its divisors is an integer number (2991260115).

Almost surely, 2^23124004021 is an apocalyptic number.

It is an amenable number.

23124004021 is a deficient number, since it is larger than the sum of its proper divisors (806076899).

23124004021 is a wasteful number, since it uses less digits than its factorization.

23124004021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289943.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 23124004021 its reverse (12040042132), we get a palindrome (35164046153).

The spelling of 23124004021 in words is "twenty-three billion, one hundred twenty-four million, four thousand, twenty-one".