642333 has 16 divisors (see below), whose sum is σ = 921600. Its totient is φ = 396720.

The previous prime is 642281. The next prime is 642359. The reversal of 642333 is 333246.

It is not a de Polignac number, because 642333 - 2⁸ = 642077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3268 + ... + 3458.

It is an arithmetic number, because the mean of its divisors is an integer number (57600).

2⁶⁴²³³³ is an apocalyptic number.

It is an amenable number.

642333 is a deficient number, since it is larger than the sum of its proper divisors (279267).

642333 is a wasteful number, since it uses less digits than its factorization.

642333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its digits is 1296, while the sum is 21.

The square root of 642333 is about 801.4567985862. The cubic root of 642333 is about 86.2819751221.

Adding to 642333 its reverse (333246), we get a palindrome (975579).

The spelling of 642333 in words is "six hundred forty-two thousand, three hundred thirty-three".