127998442 has 32 divisors (see below), whose sum is σ = 232856064. Its totient is φ = 51969600.

The previous prime is 127998413. The next prime is 127998443. The reversal of 127998442 is 244899721.

It is a junction number, because it is equal to n+sod(n) for n = 127998392 and 127998401.

It is not an unprimeable number, because it can be changed into a prime (127998443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1648 + ... + 16084.

It is an arithmetic number, because the mean of its divisors is an integer number (7276752).

Almost surely, 2^127998442 is an apocalyptic number.

127998442 is a deficient number, since it is larger than the sum of its proper divisors (104857622).

127998442 is a wasteful number, since it uses less digits than its factorization.

127998442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14494.

The product of its digits is 290304, while the sum is 46.

The square root of 127998442 is about 11313.6396442524. The cubic root of 127998442 is about 503.9663752028.

The spelling of 127998442 in words is "one hundred twenty-seven million, nine hundred ninety-eight thousand, four hundred forty-two".