127742317 has 4 divisors (see below), whose sum is σ = 128153376. Its totient is φ = 127331260.

The previous prime is 127742311. The next prime is 127742327. The reversal of 127742317 is 713247721.

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 127742317 - 2³ = 127742309 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 (127742311) 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, 205063 + ... + 205684.

It is an arithmetic number, because the mean of its divisors is an integer number (32038344).

Almost surely, 2^127742317 is an apocalyptic number.

It is an amenable number.

127742317 is a deficient number, since it is larger than the sum of its proper divisors (411059).

127742317 is an equidigital number, since it uses as much as digits as its factorization.

127742317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411058.

The product of its digits is 16464, while the sum is 34.

The square root of 127742317 is about 11302.3146744373. The cubic root of 127742317 is about 503.6300050174.

The spelling of 127742317 in words is "one hundred twenty-seven million, seven hundred forty-two thousand, three hundred seventeen".