127138259 has 4 divisors (see below), whose sum is σ = 127270704. Its totient is φ = 127005816.

The previous prime is 127138247. The next prime is 127138279. The reversal of 127138259 is 952831721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 952831721 = 53 ⋅17977957.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127138259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127138279) 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, 64772 + ... + 66705.

It is an arithmetic number, because the mean of its divisors is an integer number (31817676).

Almost surely, 2^127138259 is an apocalyptic number.

127138259 is a deficient number, since it is larger than the sum of its proper divisors (132445).

127138259 is an equidigital number, since it uses as much as digits as its factorization.

127138259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132444.

The product of its digits is 30240, while the sum is 38.

The square root of 127138259 is about 11275.5602521560. The cubic root of 127138259 is about 502.8349082131.

The spelling of 127138259 in words is "one hundred twenty-seven million, one hundred thirty-eight thousand, two hundred fifty-nine".