12373721 has 2 divisors, whose sum is σ = 12373722. Its totient is φ = 12373720.

The previous prime is 12373679. The next prime is 12373727. The reversal of 12373721 is 12737321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12355225 + 18496 = 3515^2 + 136^2 .

It is a cyclic number.

It is not a de Polignac number, because 12373721 - 2¹⁸ = 12111577 is a prime.

It is not a weakly prime, because it can be changed into another prime (12373727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6186860 + 6186861.

It is an arithmetic number, because the mean of its divisors is an integer number (6186861).

Almost surely, 2^12373721 is an apocalyptic number.

It is an amenable number.

12373721 is a deficient number, since it is larger than the sum of its proper divisors (1).

12373721 is an equidigital number, since it uses as much as digits as its factorization.

12373721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 26.

The square root of 12373721 is about 3517.6300260260. The cubic root of 12373721 is about 231.2952815150.

The spelling of 12373721 in words is "twelve million, three hundred seventy-three thousand, seven hundred twenty-one".