127157745 has 32 divisors (see below), whose sum is σ = 239025024. Its totient is φ = 56908800.

The previous prime is 127157717. The next prime is 127157761. The reversal of 127157745 is 547751721.

It is a happy number.

It is not a de Polignac number, because 127157745 - 2⁵ = 127157713 is a prime.

It is a super-2 number, since 2×127157745² = 32338184226970050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27496 + ... + 31785.

It is an arithmetic number, because the mean of its divisors is an integer number (7469532).

Almost surely, 2^127157745 is an apocalyptic number.

127157745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127157745 is a deficient number, since it is larger than the sum of its proper divisors (111867279).

127157745 is a wasteful number, since it uses less digits than its factorization.

127157745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59313.

The product of its digits is 68600, while the sum is 39.

The square root of 127157745 is about 11276.4243002824. The cubic root of 127157745 is about 502.8605961022.

The spelling of 127157745 in words is "one hundred twenty-seven million, one hundred fifty-seven thousand, seven hundred forty-five".