127843138 has 4 divisors (see below), whose sum is σ = 191764710. Its totient is φ = 63921568.

The previous prime is 127843109. The next prime is 127843141. The reversal of 127843138 is 831348721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 78801129 + 49042009 = 8877^2 + 7003^2 .

It is a junction number, because it is equal to n+sod(n) for n = 127843097 and 127843106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31960783 + ... + 31960786.

Almost surely, 2^127843138 is an apocalyptic number.

127843138 is a deficient number, since it is larger than the sum of its proper divisors (63921572).

127843138 is an equidigital number, since it uses as much as digits as its factorization.

127843138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63921571.

The product of its digits is 32256, while the sum is 37.

The square root of 127843138 is about 11306.7739873051. The cubic root of 127843138 is about 503.7624673297.

The spelling of 127843138 in words is "one hundred twenty-seven million, eight hundred forty-three thousand, one hundred thirty-eight".