127091245 has 4 divisors (see below), whose sum is σ = 152509500. Its totient is φ = 101672992.

The previous prime is 127091231. The next prime is 127091257. The reversal of 127091245 is 542190721.

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 80892036 + 46199209 = 8994^2 + 6797^2 .

It is a cyclic number.

It is not a de Polignac number, because 127091245 - 2⁷ = 127091117 is a prime.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12709120 + ... + 12709129.

It is an arithmetic number, because the mean of its divisors is an integer number (38127375).

Almost surely, 2^127091245 is an apocalyptic number.

It is an amenable number.

127091245 is a deficient number, since it is larger than the sum of its proper divisors (25418255).

127091245 is an equidigital number, since it uses as much as digits as its factorization.

127091245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25418254.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 127091245 is about 11273.4752849332. The cubic root of 127091245 is about 502.7729200670.

The spelling of 127091245 in words is "one hundred twenty-seven million, ninety-one thousand, two hundred forty-five".