642301620 has 24 divisors (see below), whose sum is σ = 1798444704. Its totient is φ = 171280416.

The previous prime is 642301609. The next prime is 642301643. The reversal of 642301620 is 26103246.

642301620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 5352454 + ... + 5352573.

It is an arithmetic number, because the mean of its divisors is an integer number (74935196).

Almost surely, 2^642301620 is an apocalyptic number.

642301620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

642301620 is an abundant number, since it is smaller than the sum of its proper divisors (1156143084).

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

642301620 is a wasteful number, since it uses less digits than its factorization.

642301620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10705039 (or 10705037 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 642301620 is about 25343.6702156574. The cubic root of 642301620 is about 862.8057004998.

Adding to 642301620 its reverse (26103246), we get a palindrome (668404866).

The spelling of 642301620 in words is "six hundred forty-two million, three hundred one thousand, six hundred twenty".