642348 has 36 divisors (see below), whose sum is σ = 1856400. Its totient is φ = 183456.

The previous prime is 642281. The next prime is 642359. The reversal of 642348 is 843246.

642348 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×642348² = 825221906208, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 642348.

It is an unprimeable number.

642348 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 11 ways as a sum of consecutive naturals, for example, 1023 + ... + 1526.

2⁶⁴²³⁴⁸ is an apocalyptic number.

It is an amenable number.

642348 is an abundant number, since it is smaller than the sum of its proper divisors (1214052).

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

642348 is a wasteful number, since it uses less digits than its factorization.

642348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566 (or 2561 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 642348 is about 801.4661564907. The cubic root of 642348 is about 86.2826467465.

It can be divided in two parts, 642 and 348, that added together give a triangular number (990 = T₄₄).

The spelling of 642348 in words is "six hundred forty-two thousand, three hundred forty-eight".