421315830 has 96 divisors (see below), whose sum is σ = 1223468064. Its totient is φ = 103700736.

The previous prime is 421315801. The next prime is 421315883. The reversal of 421315830 is 38513124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 421315794 and 421315803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24922 + ... + 38258.

It is an arithmetic number, because the mean of its divisors is an integer number (12744459).

Almost surely, 2^421315830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421315830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611734032).

421315830 is an abundant number, since it is smaller than the sum of its proper divisors (802152234).

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

421315830 is a wasteful number, since it uses less digits than its factorization.

421315830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13372 (or 13360 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 421315830 is about 20525.9793919803. The cubic root of 421315830 is about 749.6684934928.

Adding to 421315830 its reverse (38513124), we get a palindrome (459828954).

It can be divided in two parts, 42131 and 5830, that added together give a square (47961 = 219²).

The spelling of 421315830 in words is "four hundred twenty-one million, three hundred fifteen thousand, eight hundred thirty".