23560421 has 4 divisors (see below), whose sum is σ = 23577792. Its totient is φ = 23543052.

The previous prime is 23560417. The next prime is 23560477. The reversal of 23560421 is 12406532.

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 23560421 - 2² = 23560417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23560321) 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, 6461 + ... + 9426.

It is an arithmetic number, because the mean of its divisors is an integer number (5894448).

Almost surely, 2^23560421 is an apocalyptic number.

It is an amenable number.

23560421 is a deficient number, since it is larger than the sum of its proper divisors (17371).

23560421 is a wasteful number, since it uses less digits than its factorization.

23560421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17370.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23560421 is about 4853.9078071179. The cubic root of 23560421 is about 286.6779887061.

Adding to 23560421 its reverse (12406532), we get a palindrome (35966953).

The spelling of 23560421 in words is "twenty-three million, five hundred sixty thousand, four hundred twenty-one".