127801137 has 4 divisors (see below), whose sum is σ = 170401520. Its totient is φ = 85200756.

The previous prime is 127801123. The next prime is 127801147. The reversal of 127801137 is 731108721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 127801137 - 2¹⁴ = 127784753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127801147) 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, 21300187 + ... + 21300192.

It is an arithmetic number, because the mean of its divisors is an integer number (42600380).

Almost surely, 2^127801137 is an apocalyptic number.

It is an amenable number.

127801137 is a deficient number, since it is larger than the sum of its proper divisors (42600383).

127801137 is an equidigital number, since it uses as much as digits as its factorization.

127801137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42600382.

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 127801137 is about 11304.9164968168. The cubic root of 127801137 is about 503.7072933479.

Adding to 127801137 its reverse (731108721), we get a palindrome (858909858).

The spelling of 127801137 in words is "one hundred twenty-seven million, eight hundred one thousand, one hundred thirty-seven".