127121860 has 12 divisors (see below), whose sum is σ = 266955948. Its totient is φ = 50848736.

The previous prime is 127121849. The next prime is 127121861. The reversal of 127121860 is 68121721.

It can be written as a sum of positive squares in 2 ways, for example, as 21977344 + 105144516 = 4688^2 + 10254^2 .

It is not an unprimeable number, because it can be changed into a prime (127121861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3178027 + ... + 3178066.

It is an arithmetic number, because the mean of its divisors is an integer number (22246329).

Almost surely, 2^127121860 is an apocalyptic number.

127121860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127121860 is an abundant number, since it is smaller than the sum of its proper divisors (139834088).

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

127121860 is a wasteful number, since it uses less digits than its factorization.

127121860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6356102 (or 6356100 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 127121860 is about 11274.8330364578. The cubic root of 127121860 is about 502.8132878021.

The spelling of 127121860 in words is "one hundred twenty-seven million, one hundred twenty-one thousand, eight hundred sixty".