642114949 has 4 divisors (see below), whose sum is σ = 733845664. Its totient is φ = 550384236.

The previous prime is 642114947. The next prime is 642115021. The reversal of 642114949 is 949411246.

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 642114949 - 2¹ = 642114947 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 (642114947) 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, 45865347 + ... + 45865360.

It is an arithmetic number, because the mean of its divisors is an integer number (183461416).

Almost surely, 2^642114949 is an apocalyptic number.

It is an amenable number.

642114949 is a deficient number, since it is larger than the sum of its proper divisors (91730715).

642114949 is an equidigital number, since it uses as much as digits as its factorization.

642114949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91730714.

The product of its digits is 62208, while the sum is 40.

The square root of 642114949 is about 25339.9871546929. The cubic root of 642114949 is about 862.7221071623.

The spelling of 642114949 in words is "six hundred forty-two million, one hundred fourteen thousand, nine hundred forty-nine".