642444314 has 32 divisors (see below), whose sum is σ = 1044214416. Its totient is φ = 295326720.

The previous prime is 642444287. The next prime is 642444329. The reversal of 642444314 is 413444246.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 85248289 + 557196025 = 9233^2 + 23605^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 324632 + ... + 326604.

Almost surely, 2^642444314 is an apocalyptic number.

642444314 is a deficient number, since it is larger than the sum of its proper divisors (401770102).

642444314 is a wasteful number, since it uses less digits than its factorization.

642444314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210.

The product of its digits is 36864, while the sum is 32.

The square root of 642444314 is about 25346.4852395751. The cubic root of 642444314 is about 862.8695895288.

The spelling of 642444314 in words is "six hundred forty-two million, four hundred forty-four thousand, three hundred fourteen".