642849214 has 16 divisors (see below), whose sum is σ = 1102768128. Its totient is φ = 275321592.

The previous prime is 642849197. The next prime is 642849223. The reversal of 642849214 is 412948246.

642849214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×642849214² = 826510223880835592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7287 + ... + 36589.

It is an arithmetic number, because the mean of its divisors is an integer number (68923008).

Almost surely, 2^642849214 is an apocalyptic number.

642849214 is a deficient number, since it is larger than the sum of its proper divisors (459918914).

642849214 is a wasteful number, since it uses less digits than its factorization.

642849214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30879.

The product of its digits is 110592, while the sum is 40.

The square root of 642849214 is about 25354.4712822019. The cubic root of 642849214 is about 863.0508257423.

The spelling of 642849214 in words is "six hundred forty-two million, eight hundred forty-nine thousand, two hundred fourteen".