642310 has 8 divisors (see below), whose sum is σ = 1156176. Its totient is φ = 256920.

The previous prime is 642281. The next prime is 642359. The reversal of 642310 is 13246.

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

It is a super-2 number, since 2×642310² = 825124272200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

642310 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32106 + ... + 32125.

It is an arithmetic number, because the mean of its divisors is an integer number (144522).

2⁶⁴²³¹⁰ is an apocalyptic number.

642310 is a deficient number, since it is larger than the sum of its proper divisors (513866).

642310 is a wasteful number, since it uses less digits than its factorization.

642310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64238.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 642310 is about 801.4424495870. The cubic root of 642310 is about 86.2809452777.

Adding to 642310 its reverse (13246), we get a palindrome (655556).

The spelling of 642310 in words is "six hundred forty-two thousand, three hundred ten".