127137640 has 32 divisors (see below), whose sum is σ = 326926080. Its totient is φ = 43589952.

The previous prime is 127137613. The next prime is 127137649. The reversal of 127137640 is 46731721.

It is not an unprimeable number, because it can be changed into a prime (127137649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226752 + ... + 227311.

It is an arithmetic number, because the mean of its divisors is an integer number (10216440).

Almost surely, 2^127137640 is an apocalyptic number.

127137640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127137640 is an abundant number, since it is smaller than the sum of its proper divisors (199788440).

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

127137640 is a wasteful number, since it uses less digits than its factorization.

127137640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454081 (or 454077 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 127137640 is about 11275.5328033756. The cubic root of 127137640 is about 502.8340921584.

The spelling of 127137640 in words is "one hundred twenty-seven million, one hundred thirty-seven thousand, six hundred forty".