642350 has 24 divisors (see below), whose sum is σ = 1238760. Its totient is φ = 247520.

The previous prime is 642281. The next prime is 642359. The reversal of 642350 is 53246.

It is a super-2 number, since 2×642350² = 825227045000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642359) 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 11 ways as a sum of consecutive naturals, for example, 1229 + ... + 1671.

It is an arithmetic number, because the mean of its divisors is an integer number (51615).

2⁶⁴²³⁵⁰ is an apocalyptic number.

642350 is a deficient number, since it is larger than the sum of its proper divisors (596410).

642350 is a wasteful number, since it uses less digits than its factorization.

642350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 642350 is about 801.4674042031. The cubic root of 642350 is about 86.2827362956.

Adding to 642350 its reverse (53246), we get a palindrome (695596).

The spelling of 642350 in words is "six hundred forty-two thousand, three hundred fifty".