642239114 has 32 divisors (see below), whose sum is σ = 1077753600. Its totient is φ = 284530240.

The previous prime is 642239029. The next prime is 642239119. The reversal of 642239114 is 411932246.

It is not an unprimeable number, because it can be changed into a prime (642239119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276992 + ... + 279300.

It is an arithmetic number, because the mean of its divisors is an integer number (33679800).

Almost surely, 2^642239114 is an apocalyptic number.

642239114 is a deficient number, since it is larger than the sum of its proper divisors (435514486).

642239114 is a wasteful number, since it uses less digits than its factorization.

642239114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638.

The product of its digits is 10368, while the sum is 32.

The square root of 642239114 is about 25342.4370177771. The cubic root of 642239114 is about 862.7777114259. Note that the first 4 decimals are identical.

It can be divided in two parts, 64223 and 9114, that added together give a palindrome (73337).

The spelling of 642239114 in words is "six hundred forty-two million, two hundred thirty-nine thousand, one hundred fourteen".