642325105400 has 96 divisors (see below), whose sum is σ = 1635931432080. Its totient is φ = 232603392000.

The previous prime is 642325105381. The next prime is 642325105417. The reversal of 642325105400 is 4501523246.

It is a super-2 number, since 2×642325105400² (a number of 24 digits) 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 23 ways as a sum of consecutive naturals, for example, 75539 + ... + 1135938.

Almost surely, 2^642325105400 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 642325105400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (817965716040).

642325105400 is an abundant number, since it is smaller than the sum of its proper divisors (993606326680).

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

642325105400 is a wasteful number, since it uses less digits than its factorization.

642325105400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211745 (or 1211736 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 642325105400 its reverse (4501523246), we get a palindrome (646826628646).

The spelling of 642325105400 in words is "six hundred forty-two billion, three hundred twenty-five million, one hundred five thousand, four hundred".