642302 has 8 divisors (see below), whose sum is σ = 984096. Its totient is φ = 314272.

The previous prime is 642281. The next prime is 642359. The reversal of 642302 is 203246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

642302 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3323 + ... + 3510.

It is an arithmetic number, because the mean of its divisors is an integer number (123012).

2⁶⁴²³⁰² is an apocalyptic number.

642302 is a deficient number, since it is larger than the sum of its proper divisors (341794).

642302 is a wasteful number, since it uses less digits than its factorization.

642302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 642302 is about 801.4374585705. The cubic root of 642302 is about 86.2805870651.

Adding to 642302 its reverse (203246), we get a palindrome (845548).

The spelling of 642302 in words is "six hundred forty-two thousand, three hundred two".