127989442 has 8 divisors (see below), whose sum is σ = 219410496. Its totient is φ = 54852612.

The previous prime is 127989439. The next prime is 127989443. The reversal of 127989442 is 244989721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 127989392 and 127989401.

It is not an unprimeable number, because it can be changed into a prime (127989443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4571038 + ... + 4571065.

It is an arithmetic number, because the mean of its divisors is an integer number (27426312).

Almost surely, 2^127989442 is an apocalyptic number.

127989442 is a deficient number, since it is larger than the sum of its proper divisors (91421054).

127989442 is an equidigital number, since it uses as much as digits as its factorization.

127989442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9142112.

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

The square root of 127989442 is about 11313.2418872753. The cubic root of 127989442 is about 503.9545630702.

The spelling of 127989442 in words is "one hundred twenty-seven million, nine hundred eighty-nine thousand, four hundred forty-two".