126715297 has 16 divisors (see below), whose sum is σ = 142203600. Its totient is φ = 112322560.

The previous prime is 126715283. The next prime is 126715301. The reversal of 126715297 is 792517621.

It can be written as a sum of positive squares in 8 ways, for example, as 5803281 + 120912016 = 2409^2 + 10996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126715297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126715217) 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 in 15 ways as a sum of consecutive naturals, for example, 17079 + ... + 23347.

It is an arithmetic number, because the mean of its divisors is an integer number (8887725).

Almost surely, 2^126715297 is an apocalyptic number.

126715297 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

126715297 is a deficient number, since it is larger than the sum of its proper divisors (15488303).

126715297 is a wasteful number, since it uses less digits than its factorization.

126715297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6356.

The product of its digits is 52920, while the sum is 40.

The square root of 126715297 is about 11256.7889293528. The cubic root of 126715297 is about 502.2766803853.

The spelling of 126715297 in words is "one hundred twenty-six million, seven hundred fifteen thousand, two hundred ninety-seven".