127206945 has 12 divisors (see below), whose sum is σ = 220492116. Its totient is φ = 67843680.

The previous prime is 127206931. The next prime is 127206967. The reversal of 127206945 is 549602721.

It can be written as a sum of positive squares in 2 ways, for example, as 51151104 + 76055841 = 7152^2 + 8721^2 .

It is not a de Polignac number, because 127206945 - 2⁴ = 127206929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1413366 + ... + 1413455.

It is an arithmetic number, because the mean of its divisors is an integer number (18374343).

Almost surely, 2^127206945 is an apocalyptic number.

127206945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127206945 is a deficient number, since it is larger than the sum of its proper divisors (93285171).

127206945 is a wasteful number, since it uses less digits than its factorization.

127206945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826832 (or 2826829 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 127206945 is about 11278.6056319033. The cubic root of 127206945 is about 502.9254435117.

The spelling of 127206945 in words is "one hundred twenty-seven million, two hundred six thousand, nine hundred forty-five".