127105720 has 32 divisors (see below), whose sum is σ = 326844000. Its totient is φ = 43579008.

The previous prime is 127105717. The next prime is 127105733. The reversal of 127105720 is 27501721.

It is a happy number.

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, 226695 + ... + 227254.

It is an arithmetic number, because the mean of its divisors is an integer number (10213875).

Almost surely, 2^127105720 is an apocalyptic number.

127105720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127105720 is an abundant number, since it is smaller than the sum of its proper divisors (199738280).

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

127105720 is a wasteful number, since it uses less digits than its factorization.

127105720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453967 (or 453963 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 127105720 is about 11274.1172603446. The cubic root of 127105720 is about 502.7920070406.

The spelling of 127105720 in words is "one hundred twenty-seven million, one hundred five thousand, seven hundred twenty".