642352 has 20 divisors (see below), whose sum is σ = 1310680. Its totient is φ = 304128.

The previous prime is 642281. The next prime is 642359. The reversal of 642352 is 253246.

It is a happy number.

It is a d-powerful number, because it can be written as 6 + 4 + 3¹² + 2³ + 5⁷ + 2¹⁵ .

It is not an unprimeable number, because it can be changed into a prime (642359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753 + ... + 1360.

It is an arithmetic number, because the mean of its divisors is an integer number (65534).

2⁶⁴²³⁵² is an apocalyptic number.

It is an amenable number.

642352 is an abundant number, since it is smaller than the sum of its proper divisors (668328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

642352 is a wasteful number, since it uses less digits than its factorization.

642352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140 (or 2134 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 642352 is about 801.4686519135. The cubic root of 642352 is about 86.2828258445.

Adding to 642352 its reverse (253246), we get a palindrome (895598).

The spelling of 642352 in words is "six hundred forty-two thousand, three hundred fifty-two".