127906457 has 4 divisors (see below), whose sum is σ = 146178816. Its totient is φ = 109634100.

The previous prime is 127906421. The next prime is 127906459. The reversal of 127906457 is 754609721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 127906457 - 2⁸ = 127906201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127906459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9136169 + ... + 9136182.

It is an arithmetic number, because the mean of its divisors is an integer number (36544704).

Almost surely, 2^127906457 is an apocalyptic number.

It is an amenable number.

127906457 is a deficient number, since it is larger than the sum of its proper divisors (18272359).

127906457 is an equidigital number, since it uses as much as digits as its factorization.

127906457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18272358.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 127906457 is about 11309.5736878098. The cubic root of 127906457 is about 503.8456225449.

The spelling of 127906457 in words is "one hundred twenty-seven million, nine hundred six thousand, four hundred fifty-seven".