23042302421 has 4 divisors (see below), whose sum is σ = 24255055200. Its totient is φ = 21829549644.

The previous prime is 23042302417. The next prime is 23042302429. The reversal of 23042302421 is 12420324032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23042302421 - 2² = 23042302417 is a prime.

It is a super-2 number, since 2×23042302421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23042302429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606376361 + ... + 606376398.

It is an arithmetic number, because the mean of its divisors is an integer number (6063763800).

Almost surely, 2^23042302421 is an apocalyptic number.

It is an amenable number.

23042302421 is a deficient number, since it is larger than the sum of its proper divisors (1212752779).

23042302421 is a wasteful number, since it uses less digits than its factorization.

23042302421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212752778.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 23042302421 its reverse (12420324032), we get a palindrome (35462626453).

The spelling of 23042302421 in words is "twenty-three billion, forty-two million, three hundred two thousand, four hundred twenty-one".