127512161 has 12 divisors (see below), whose sum is σ = 154780992. Its totient is φ = 104543208.

The previous prime is 127512149. The next prime is 127512163. The reversal of 127512161 is 161215721.

It is not a de Polignac number, because 127512161 - 2²⁶ = 60403297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 127512161.

It is not an unprimeable number, because it can be changed into a prime (127512163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55445 + ... + 57698.

It is an arithmetic number, because the mean of its divisors is an integer number (12898416).

Almost surely, 2^127512161 is an apocalyptic number.

It is an amenable number.

127512161 is a deficient number, since it is larger than the sum of its proper divisors (27268831).

127512161 is a wasteful number, since it uses less digits than its factorization.

127512161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113180 (or 113173 counting only the distinct ones).

The product of its digits is 840, while the sum is 26.

The square root of 127512161 is about 11292.1282759274. The cubic root of 127512161 is about 503.3273562828.

Adding to 127512161 its reverse (161215721), we get a palindrome (288727882).

The spelling of 127512161 in words is "one hundred twenty-seven million, five hundred twelve thousand, one hundred sixty-one".