12402997 has 2 divisors, whose sum is σ = 12402998. Its totient is φ = 12402996.

The previous prime is 12402977. The next prime is 12403009. The reversal of 12402997 is 79920421.

It is a happy number.

12402997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9492561 + 2910436 = 3081^2 + 1706^2 .

It is a cyclic number.

It is not a de Polignac number, because 12402997 - 2¹⁵ = 12370229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12402917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201498 + 6201499.

It is an arithmetic number, because the mean of its divisors is an integer number (6201499).

Almost surely, 2^12402997 is an apocalyptic number.

It is an amenable number.

12402997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402997 is an equidigital number, since it uses as much as digits as its factorization.

12402997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 12402997 is about 3521.7888920263. The cubic root of 12402997 is about 231.4775513252.

The spelling of 12402997 in words is "twelve million, four hundred two thousand, nine hundred ninety-seven".