421810733700 has 216 divisors, whose sum is σ = 1437752868552. Its totient is φ = 103004835840.

The previous prime is 421810733587. The next prime is 421810733713. The reversal of 421810733700 is 7337018124.

421810733700 is a `hidden beast` number, since 4 + 218 + 1 + 0 + 73 + 370 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 7386371136 + 414424362564 = 85944^2 + 643758^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 193542 + ... + 938658.

Almost surely, 2^421810733700 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 421810733700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718876434276).

421810733700 is an abundant number, since it is smaller than the sum of its proper divisors (1015942134852).

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

421810733700 is a wasteful number, since it uses less digits than its factorization.

421810733700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745191 (or 745181 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The spelling of 421810733700 in words is "four hundred twenty-one billion, eight hundred ten million, seven hundred thirty-three thousand, seven hundred".