126952857 has 12 divisors (see below), whose sum is σ = 184391844. Its totient is φ = 84166560.

The previous prime is 126952853. The next prime is 126952867. The reversal of 126952857 is 758259621.

126952857 is a `hidden beast` number, since 12 + 69 + 528 + 57 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19395216 + 107557641 = 4404^2 + 10371^2 .

It is not a de Polignac number, because 126952857 - 2² = 126952853 is a prime.

It is a super-2 number, since 2×126952857² = 32234055800924898, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (126952853) 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 11 ways as a sum of consecutive naturals, for example, 37338 + ... + 40595.

It is an arithmetic number, because the mean of its divisors is an integer number (15365987).

Almost surely, 2^126952857 is an apocalyptic number.

It is an amenable number.

126952857 is a deficient number, since it is larger than the sum of its proper divisors (57438987).

126952857 is a wasteful number, since it uses less digits than its factorization.

126952857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78120 (or 78117 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 126952857 is about 11267.3358430465. The cubic root of 126952857 is about 502.5903661645.

The spelling of 126952857 in words is "one hundred twenty-six million, nine hundred fifty-two thousand, eight hundred fifty-seven".