642053 has 4 divisors (see below), whose sum is σ = 651168. Its totient is φ = 632940.

The previous prime is 642049. The next prime is 642071. The reversal of 642053 is 350246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 642053 - 2² = 642049 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642013) 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, 4451 + ... + 4592.

It is an arithmetic number, because the mean of its divisors is an integer number (162792).

2⁶⁴²⁰⁵³ is an apocalyptic number.

It is an amenable number.

642053 is a deficient number, since it is larger than the sum of its proper divisors (9115).

642053 is an equidigital number, since it uses as much as digits as its factorization.

642053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9114.

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

The square root of 642053 is about 801.2820976410. The cubic root of 642053 is about 86.2694362135.

Adding to 642053 its reverse (350246), we get a palindrome (992299).

The spelling of 642053 in words is "six hundred forty-two thousand, fifty-three".