126997369 has 2 divisors, whose sum is σ = 126997370. Its totient is φ = 126997368.

The previous prime is 126997307. The next prime is 126997373. The reversal of 126997369 is 963799621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112466025 + 14531344 = 10605^2 + 3812^2 .

It is a cyclic number.

It is not a de Polignac number, because 126997369 - 2¹⁵ = 126964601 is a prime.

It is a super-2 number, since 2×126997369² = 32256663465844322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126997379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63498684 + 63498685.

It is an arithmetic number, because the mean of its divisors is an integer number (63498685).

Almost surely, 2^126997369 is an apocalyptic number.

It is an amenable number.

126997369 is a deficient number, since it is larger than the sum of its proper divisors (1).

126997369 is an equidigital number, since it uses as much as digits as its factorization.

126997369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 52.

The square root of 126997369 is about 11269.3109372313. The cubic root of 126997369 is about 502.6490984341.

The spelling of 126997369 in words is "one hundred twenty-six million, nine hundred ninety-seven thousand, three hundred sixty-nine".