127145520 has 60 divisors (see below), whose sum is σ = 426999456. Its totient is φ = 33905280.

The previous prime is 127145507. The next prime is 127145521. The reversal of 127145520 is 25541721.

127145520 is a `hidden beast` number, since 127 + 14 + 5 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (127145521) by changing a digit.

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, 87576 + ... + 89015.

Almost surely, 2^127145520 is an apocalyptic number.

127145520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127145520 is an abundant number, since it is smaller than the sum of its proper divisors (299853936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127145520 is a wasteful number, since it uses less digits than its factorization.

127145520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176610 (or 176601 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 127145520 is about 11275.8822271253. The cubic root of 127145520 is about 502.8444805081.

The spelling of 127145520 in words is "one hundred twenty-seven million, one hundred forty-five thousand, five hundred twenty".