421242312 has 64 divisors (see below), whose sum is σ = 1111147200. Its totient is φ = 132710400.

The previous prime is 421242307. The next prime is 421242329. The reversal of 421242312 is 213242124.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262312 + ... + 263912.

It is an arithmetic number, because the mean of its divisors is an integer number (17361675).

Almost surely, 2^421242312 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 421242312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555573600).

421242312 is an abundant number, since it is smaller than the sum of its proper divisors (689904888).

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

421242312 is a wasteful number, since it uses less digits than its factorization.

421242312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206 (or 2202 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 421242312 is about 20524.1884614228. The cubic root of 421242312 is about 749.6248861952.

Adding to 421242312 its reverse (213242124), we get a palindrome (634484436).

The spelling of 421242312 in words is "four hundred twenty-one million, two hundred forty-two thousand, three hundred twelve".