642277267 has 8 divisors (see below), whose sum is σ = 654772896. Its totient is φ = 629795712.

The previous prime is 642277249. The next prime is 642277271. The reversal of 642277267 is 762772246.

642277267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-642277267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642277067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168618 + ... + 172384.

It is an arithmetic number, because the mean of its divisors is an integer number (81846612).

Almost surely, 2^642277267 is an apocalyptic number.

642277267 is a deficient number, since it is larger than the sum of its proper divisors (12495629).

642277267 is a wasteful number, since it uses less digits than its factorization.

642277267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7037.

The product of its digits is 395136, while the sum is 43.

The square root of 642277267 is about 25343.1897558299. The cubic root of 642277267 is about 862.7947958759.

The spelling of 642277267 in words is "six hundred forty-two million, two hundred seventy-seven thousand, two hundred sixty-seven".