642052 has 12 divisors (see below), whose sum is σ = 1132096. Its totient is φ = 318600.

The previous prime is 642049. The next prime is 642071. The reversal of 642052 is 250246.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73 + ... + 1135.

2⁶⁴²⁰⁵² is an apocalyptic number.

It is an amenable number.

642052 is a deficient number, since it is larger than the sum of its proper divisors (490044).

642052 is a wasteful number, since it uses less digits than its factorization.

642052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 642052 is about 801.2814736408. The cubic root of 642052 is about 86.2693914251.

Adding to 642052 its reverse (250246), we get a palindrome (892298).

It can be divided in two parts, 64 and 2052, that multiplied together give a triangular number (131328 = T₅₁₂).

The spelling of 642052 in words is "six hundred forty-two thousand, fifty-two".