127213520 has 40 divisors (see below), whose sum is σ = 338025984. Its totient is φ = 43615872.

The previous prime is 127213481. The next prime is 127213543. The reversal of 127213520 is 25312721.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113024 + ... + 114143.

Almost surely, 2^127213520 is an apocalyptic number.

127213520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127213520 is an abundant number, since it is smaller than the sum of its proper divisors (210812464).

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

127213520 is a wasteful number, since it uses less digits than its factorization.

127213520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227187 (or 227181 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 127213520 is about 11278.8971092035. The cubic root of 127213520 is about 502.9341083369.

The spelling of 127213520 in words is "one hundred twenty-seven million, two hundred thirteen thousand, five hundred twenty".