127099640 has 32 divisors (see below), whose sum is σ = 287642880. Its totient is φ = 50543232.

The previous prime is 127099639. The next prime is 127099657. The reversal of 127099640 is 46990721.

It is a junction number, because it is equal to n+sod(n) for n = 127099594 and 127099603.

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, 2264 + ... + 16103.

It is an arithmetic number, because the mean of its divisors is an integer number (8988840).

Almost surely, 2^127099640 is an apocalyptic number.

127099640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127099640 is an abundant number, since it is smaller than the sum of its proper divisors (160543240).

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

127099640 is a wasteful number, since it uses less digits than its factorization.

127099640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18551 (or 18547 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 127099640 is about 11273.8476129492. The cubic root of 127099640 is about 502.7839900289.

The spelling of 127099640 in words is "one hundred twenty-seven million, ninety-nine thousand, six hundred forty".