642063100 has 144 divisors (see below), whose sum is σ = 1655394048. Its totient is φ = 211599360.

The previous prime is 642063091. The next prime is 642063113. The reversal of 642063100 is 1360246.

642063100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×642063100² = 824490048763220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2498172 + ... + 2498428.

It is an arithmetic number, because the mean of its divisors is an integer number (11495792).

Almost surely, 2^642063100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642063100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (827697024).

642063100 is an abundant number, since it is smaller than the sum of its proper divisors (1013330948).

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

642063100 is a wasteful number, since it uses less digits than its factorization.

642063100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 642063100 is about 25338.9640672226. The cubic root of 642063100 is about 862.6988857320.

The spelling of 642063100 in words is "six hundred forty-two million, sixty-three thousand, one hundred".