421936410 has 64 divisors (see below), whose sum is σ = 1168607232. Its totient is φ = 95501376.

The previous prime is 421936397. The next prime is 421936429. The reversal of 421936410 is 14639124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11877 + ... + 31383.

It is an arithmetic number, because the mean of its divisors is an integer number (18259488).

Almost surely, 2^421936410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421936410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (584303616).

421936410 is an abundant number, since it is smaller than the sum of its proper divisors (746670822).

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

421936410 is a wasteful number, since it uses less digits than its factorization.

421936410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19627.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 421936410 is about 20541.0907694796. The cubic root of 421936410 is about 750.0363893455.

The spelling of 421936410 in words is "four hundred twenty-one million, nine hundred thirty-six thousand, four hundred ten".