642094 has 4 divisors (see below), whose sum is σ = 963144. Its totient is φ = 321046.

The previous prime is 642079. The next prime is 642113. The reversal of 642094 is 490246.

642094 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160522 + ... + 160525.

It is an arithmetic number, because the mean of its divisors is an integer number (240786).

2⁶⁴²⁰⁹⁴ is an apocalyptic number.

642094 is a deficient number, since it is larger than the sum of its proper divisors (321050).

642094 is a wasteful number, since it uses less digits than its factorization.

642094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321049.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 642094 is about 801.3076812311. The cubic root of 642094 is about 86.2712724957.

The spelling of 642094 in words is "six hundred forty-two thousand, ninety-four".