126917497 has 18 divisors (see below), whose sum is σ = 150134922. Its totient is φ = 106977024.

The previous prime is 126917491. The next prime is 126917507. The reversal of 126917497 is 794719621.

It can be written as a sum of positive squares in only one way, i.e., 126697536 + 219961 = 11256^2 + 469^2 .

It is not a de Polignac number, because 126917497 - 2³ = 126917489 is a prime.

It is a super-2 number, since 2×126917497² = 32216102089490018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126917491) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 219673 + ... + 220249.

It is an arithmetic number, because the mean of its divisors is an integer number (8340829).

Almost surely, 2^126917497 is an apocalyptic number.

It is an amenable number.

126917497 is a deficient number, since it is larger than the sum of its proper divisors (23217425).

126917497 is an frugal number, since it uses more digits than its factorization.

126917497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 651 counting only the distinct ones).

The product of its digits is 190512, while the sum is 46.

The square root of 126917497 is about 11265.7665961975. The cubic root of 126917497 is about 502.5436999032.

The spelling of 126917497 in words is "one hundred twenty-six million, nine hundred seventeen thousand, four hundred ninety-seven".