642642602 has 16 divisors (see below), whose sum is σ = 1166477760. Its totient is φ = 259217088.

The previous prime is 642642587. The next prime is 642642629. The reversal of 642642602 is 206246246.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1349852 + ... + 1350327.

It is an arithmetic number, because the mean of its divisors is an integer number (72904860).

Almost surely, 2^642642602 is an apocalyptic number.

642642602 is a deficient number, since it is larger than the sum of its proper divisors (523835158).

642642602 is a wasteful number, since it uses less digits than its factorization.

642642602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700205.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 642642602 is about 25350.3964860513. The cubic root of 642642602 is about 862.9583542055.

Adding to 642642602 its reverse (206246246), we get a palindrome (848888848).

It can be divided in two parts, 64264 and 2602, that added together give a palindrome (66866).

The spelling of 642642602 in words is "six hundred forty-two million, six hundred forty-two thousand, six hundred two".