127422681 has 4 divisors (see below), whose sum is σ = 169896912. Its totient is φ = 84948452.

The previous prime is 127422671. The next prime is 127422697. The reversal of 127422681 is 186224721.

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 127422681 - 2⁵ = 127422649 is a prime.

It is a super-2 number, since 2×127422681² = 32473079266455522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127422671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21237111 + ... + 21237116.

It is an arithmetic number, because the mean of its divisors is an integer number (42474228).

Almost surely, 2^127422681 is an apocalyptic number.

It is an amenable number.

127422681 is a deficient number, since it is larger than the sum of its proper divisors (42474231).

127422681 is an equidigital number, since it uses as much as digits as its factorization.

127422681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42474230.

The product of its digits is 10752, while the sum is 33.

The square root of 127422681 is about 11288.1655285525. The cubic root of 127422681 is about 503.2095942579.

The spelling of 127422681 in words is "one hundred twenty-seven million, four hundred twenty-two thousand, six hundred eighty-one".