127900013 has 4 divisors (see below), whose sum is σ = 127975968. Its totient is φ = 127824060.

The previous prime is 127899997. The next prime is 127900081. The reversal of 127900013 is 310009721.

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 a cyclic number.

It is not a de Polignac number, because 127900013 - 2⁴ = 127899997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127900093) 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, 35393 + ... + 38838.

It is an arithmetic number, because the mean of its divisors is an integer number (31993992).

Almost surely, 2^127900013 is an apocalyptic number.

It is an amenable number.

127900013 is a deficient number, since it is larger than the sum of its proper divisors (75955).

127900013 is an equidigital number, since it uses as much as digits as its factorization.

127900013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75954.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 127900013 is about 11309.2887928463. The cubic root of 127900013 is about 503.8371610599.

Adding to 127900013 its reverse (310009721), we get a palindrome (437909734).

The spelling of 127900013 in words is "one hundred twenty-seven million, nine hundred thousand, thirteen".