127999744 has 54 divisors (see below), whose sum is σ = 265834464. Its totient is φ = 61447680.

The previous prime is 127999727. The next prime is 127999763. The reversal of 127999744 is 447999721.

It is a junction number, because it is equal to n+sod(n) for n = 127999691 and 127999700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1007809 + ... + 1007935.

Almost surely, 2^127999744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127999744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132917232).

127999744 is an abundant number, since it is smaller than the sum of its proper divisors (137834720).

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

127999744 is an frugal number, since it uses more digits than its factorization.

127999744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 160 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 52.

The square root of 127999744 is about 11313.6971852706. The cubic root of 127999744 is about 503.9680839788.

The spelling of 127999744 in words is "one hundred twenty-seven million, nine hundred ninety-nine thousand, seven hundred forty-four".