127640353 has 4 divisors (see below), whose sum is σ = 127664128. Its totient is φ = 127616580.

The previous prime is 127640333. The next prime is 127640371. The reversal of 127640353 is 353046721.

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 a de Polignac number, because none of the positive numbers 2^k-127640353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127640323) 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, 400 + ... + 15982.

It is an arithmetic number, because the mean of its divisors is an integer number (31916032).

Almost surely, 2^127640353 is an apocalyptic number.

It is an amenable number.

127640353 is a deficient number, since it is larger than the sum of its proper divisors (23775).

127640353 is an equidigital number, since it uses as much as digits as its factorization.

127640353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23774.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 127640353 is about 11297.8030165161. The cubic root of 127640353 is about 503.4959700836.

The spelling of 127640353 in words is "one hundred twenty-seven million, six hundred forty thousand, three hundred fifty-three".