421502115100 has 72 divisors (see below), whose sum is σ = 998792323200. Its totient is φ = 153122673600.

The previous prime is 421502115077. The next prime is 421502115127. The reversal of 421502115100 is 1511205124.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 932881 + ... + 1308919.

It is an arithmetic number, because the mean of its divisors is an integer number (13872115600).

Almost surely, 2^421502115100 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 421502115100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499396161600).

421502115100 is an abundant number, since it is smaller than the sum of its proper divisors (577290208100).

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

421502115100 is a wasteful number, since it uses less digits than its factorization.

421502115100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377083 (or 377076 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The spelling of 421502115100 in words is "four hundred twenty-one billion, five hundred two million, one hundred fifteen thousand, one hundred".