421342344 has 64 divisors (see below), whose sum is σ = 1173182400. Its totient is φ = 140113152.

The previous prime is 421342333. The next prime is 421342387. The reversal of 421342344 is 443243124.

It is a happy number.

421342344 is a `hidden beast` number, since 421 + 3 + 4 + 234 + 4 = 666.

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

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, 98784 + ... + 102960.

It is an arithmetic number, because the mean of its divisors is an integer number (18330975).

Almost surely, 2^421342344 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 421342344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586591200).

421342344 is an abundant number, since it is smaller than the sum of its proper divisors (751840056).

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

421342344 is a wasteful number, since it uses less digits than its factorization.

421342344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4659 (or 4649 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 421342344 is about 20526.6252462503. The cubic root of 421342344 is about 749.6842190619.

Adding to 421342344 its reverse (443243124), we get a palindrome (864585468).

The spelling of 421342344 in words is "four hundred twenty-one million, three hundred forty-two thousand, three hundred forty-four".