127144513 has 4 divisors (see below), whose sum is σ = 134623620. Its totient is φ = 119665408.

The previous prime is 127144487. The next prime is 127144519. The reversal of 127144513 is 315441721.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35617024 + 91527489 = 5968^2 + 9567^2 .

It is a cyclic number.

It is not a de Polignac number, because 127144513 - 2⁵ = 127144481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127144519) 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, 3739528 + ... + 3739561.

It is an arithmetic number, because the mean of its divisors is an integer number (33655905).

Almost surely, 2^127144513 is an apocalyptic number.

It is an amenable number.

127144513 is a deficient number, since it is larger than the sum of its proper divisors (7479107).

127144513 is an equidigital number, since it uses as much as digits as its factorization.

127144513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7479106.

The product of its digits is 3360, while the sum is 28.

The square root of 127144513 is about 11275.8375742115. The cubic root of 127144513 is about 502.8431529853.

The spelling of 127144513 in words is "one hundred twenty-seven million, one hundred forty-four thousand, five hundred thirteen".