421101600 has 144 divisors (see below), whose sum is σ = 1388661120. Its totient is φ = 110822400.

The previous prime is 421101587. The next prime is 421101607. The reversal of 421101600 is 6101124.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 421101600.

It is not an unprimeable number, because it can be changed into a prime (421101607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188490 + ... + 190710.

It is an arithmetic number, because the mean of its divisors is an integer number (9643480).

Almost surely, 2^421101600 is an apocalyptic number.

421101600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421101600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (694330560).

421101600 is an abundant number, since it is smaller than the sum of its proper divisors (967559520).

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

421101600 is a wasteful number, since it uses less digits than its factorization.

421101600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323 (or 2310 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 421101600 is about 20520.7602198359. The cubic root of 421101600 is about 749.5414085379.

Adding to 421101600 its reverse (6101124), we get a palindrome (427202724).

The spelling of 421101600 in words is "four hundred twenty-one million, one hundred one thousand, six hundred".