421361100 has 216 divisors, whose sum is σ = 1426523280. Its totient is φ = 103680000.

The previous prime is 421361093. The next prime is 421361117. The reversal of 421361100 is 1163124.

It is a happy number.

421361100 is a `hidden beast` number, since 42 + 13 + 611 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 700800 + ... + 701400.

Almost surely, 2^421361100 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 421361100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713261640).

421361100 is an abundant number, since it is smaller than the sum of its proper divisors (1005162180).

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

421361100 is a wasteful number, since it uses less digits than its factorization.

421361100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 421361100 is about 20527.0821112013. The cubic root of 421361100 is about 749.6953429288.

The spelling of 421361100 in words is "four hundred twenty-one million, three hundred sixty-one thousand, one hundred".