126982257 has 8 divisors (see below), whose sum is σ = 169940160. Its totient is φ = 84339600.

The previous prime is 126982243. The next prime is 126982267. The reversal of 126982257 is 752289621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126982257 - 2⁸ = 126982001 is a prime.

It is a super-2 number, since 2×126982257² = 32248987185628098, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (126982217) 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 7 ways as a sum of consecutive naturals, for example, 77869 + ... + 79482.

It is an arithmetic number, because the mean of its divisors is an integer number (21242520).

Almost surely, 2^126982257 is an apocalyptic number.

It is an amenable number.

126982257 is a deficient number, since it is larger than the sum of its proper divisors (42957903).

126982257 is a wasteful number, since it uses less digits than its factorization.

126982257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157623.

The product of its digits is 120960, while the sum is 42.

The square root of 126982257 is about 11268.6404237601. The cubic root of 126982257 is about 502.6291601353.

The spelling of 126982257 in words is "one hundred twenty-six million, nine hundred eighty-two thousand, two hundred fifty-seven".