642014894 has 16 divisors (see below), whose sum is σ = 1020264336. Its totient is φ = 301948800.

The previous prime is 642014869. The next prime is 642014899. The reversal of 642014894 is 498410246.

642014894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642014899) 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, 68024 + ... + 76884.

It is an arithmetic number, because the mean of its divisors is an integer number (63766521).

Almost surely, 2^642014894 is an apocalyptic number.

642014894 is a deficient number, since it is larger than the sum of its proper divisors (378249442).

642014894 is a wasteful number, since it uses less digits than its factorization.

642014894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11011.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 642014894 is about 25338.0128265813. The cubic root of 642014894 is about 862.6772947579.

The spelling of 642014894 in words is "six hundred forty-two million, fourteen thousand, eight hundred ninety-four".