127071745 has 4 divisors (see below), whose sum is σ = 152486100. Its totient is φ = 101657392.

The previous prime is 127071743. The next prime is 127071761. The reversal of 127071745 is 547170721.

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 23357889 + 103713856 = 4833^2 + 10184^2 .

It is a cyclic number.

It is not a de Polignac number, because 127071745 - 2¹ = 127071743 is a prime.

It is a super-2 number, since 2×127071745² = 32294456754690050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 127071745.

It is not an unprimeable number, because it can be changed into a prime (127071743) by changing a digit.

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, 12707170 + ... + 12707179.

It is an arithmetic number, because the mean of its divisors is an integer number (38121525).

Almost surely, 2^127071745 is an apocalyptic number.

It is an amenable number.

127071745 is a deficient number, since it is larger than the sum of its proper divisors (25414355).

127071745 is an equidigital number, since it uses as much as digits as its factorization.

127071745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25414354.

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 127071745 is about 11272.6103897899. The cubic root of 127071745 is about 502.7472047540.

The spelling of 127071745 in words is "one hundred twenty-seven million, seventy-one thousand, seven hundred forty-five".