126945997 has 2 divisors, whose sum is σ = 126945998. Its totient is φ = 126945996.

The previous prime is 126945983. The next prime is 126946003. The reversal of 126945997 is 799549621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97199881 + 29746116 = 9859^2 + 5454^2 .

It is a cyclic number.

It is not a de Polignac number, because 126945997 - 2¹⁹ = 126421709 is a prime.

It is a super-2 number, since 2×126945997² = 32230572308648018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126945967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63472998 + 63472999.

It is an arithmetic number, because the mean of its divisors is an integer number (63472999).

Almost surely, 2^126945997 is an apocalyptic number.

It is an amenable number.

126945997 is a deficient number, since it is larger than the sum of its proper divisors (1).

126945997 is an equidigital number, since it uses as much as digits as its factorization.

126945997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 52.

The square root of 126945997 is about 11267.0314191450. The cubic root of 126945997 is about 502.5813133762.

The spelling of 126945997 in words is "one hundred twenty-six million, nine hundred forty-five thousand, nine hundred ninety-seven".