127399392 has 120 divisors (see below), whose sum is σ = 391151376. Its totient is φ = 40601088.

The previous prime is 127399373. The next prime is 127399397. The reversal of 127399392 is 293993721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127399397) 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 19 ways as a sum of consecutive naturals, for example, 58548 + ... + 60684.

Almost surely, 2^127399392 is an apocalyptic number.

127399392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127399392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195575688).

127399392 is an abundant number, since it is smaller than the sum of its proper divisors (263751984).

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

127399392 is a wasteful number, since it uses less digits than its factorization.

127399392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182 (or 2165 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 127399392 is about 11287.1339143292. The cubic root of 127399392 is about 503.1789352413.

The spelling of 127399392 in words is "one hundred twenty-seven million, three hundred ninety-nine thousand, three hundred ninety-two".