127121340 has 24 divisors (see below), whose sum is σ = 355939920. Its totient is φ = 33899008.

The previous prime is 127121333. The next prime is 127121363. The reversal of 127121340 is 43121721.

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, 1059285 + ... + 1059404.

It is an arithmetic number, because the mean of its divisors is an integer number (14830830).

Almost surely, 2^127121340 is an apocalyptic number.

127121340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127121340 is an abundant number, since it is smaller than the sum of its proper divisors (228818580).

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

127121340 is a wasteful number, since it uses less digits than its factorization.

127121340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118701 (or 2118699 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 127121340 is about 11274.8099762258. The cubic root of 127121340 is about 502.8126022047.

The spelling of 127121340 in words is "one hundred twenty-seven million, one hundred twenty-one thousand, three hundred forty".