642038 has 8 divisors (see below), whose sum is σ = 979560. Its totient is φ = 315520.

The previous prime is 642013. The next prime is 642049. The reversal of 642038 is 830246.

It is a happy number.

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

It is a congruent number.

It is an unprimeable 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, 2603 + ... + 2838.

It is an arithmetic number, because the mean of its divisors is an integer number (122445).

2⁶⁴²⁰³⁸ is an apocalyptic number.

642038 is a deficient number, since it is larger than the sum of its proper divisors (337522).

642038 is a wasteful number, since it uses less digits than its factorization.

642038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 642038 is about 801.2727375869. The cubic root of 642038 is about 86.2687643834.

The spelling of 642038 in words is "six hundred forty-two thousand, thirty-eight".