127156045 has 4 divisors (see below), whose sum is σ = 152587260. Its totient is φ = 101724832.

The previous prime is 127155997. The next prime is 127156061. The reversal of 127156045 is 540651721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51065316 + 76090729 = 7146^2 + 8723^2 .

It is a cyclic number.

It is not a de Polignac number, because 127156045 - 2²³ = 118767437 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 127155998 and 127156016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12715600 + ... + 12715609.

It is an arithmetic number, because the mean of its divisors is an integer number (38146815).

Almost surely, 2^127156045 is an apocalyptic number.

It is an amenable number.

127156045 is a deficient number, since it is larger than the sum of its proper divisors (25431215).

127156045 is an equidigital number, since it uses as much as digits as its factorization.

127156045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25431214.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 127156045 is about 11276.3489215260. The cubic root of 127156045 is about 502.8583551407.

The spelling of 127156045 in words is "one hundred twenty-seven million, one hundred fifty-six thousand, forty-five".