12373521 has 4 divisors (see below), whose sum is σ = 16498032. Its totient is φ = 8249012.

The previous prime is 12373519. The next prime is 12373523. The reversal of 12373521 is 12537321.

12373521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an interprime number because it is at equal distance from previous prime (12373519) and next prime (12373523).

It is a cyclic number.

It is not a de Polignac number, because 12373521 - 2¹ = 12373519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12373491 and 12373500.

It is not an unprimeable number, because it can be changed into a prime (12373523) 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, 2062251 + ... + 2062256.

It is an arithmetic number, because the mean of its divisors is an integer number (4124508).

Almost surely, 2^12373521 is an apocalyptic number.

It is an amenable number.

12373521 is a deficient number, since it is larger than the sum of its proper divisors (4124511).

12373521 is an equidigital number, since it uses as much as digits as its factorization.

12373521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124510.

The product of its digits is 1260, while the sum is 24.

The square root of 12373521 is about 3517.6015976799. The cubic root of 12373521 is about 231.2940353443.

The spelling of 12373521 in words is "twelve million, three hundred seventy-three thousand, five hundred twenty-one".