421843342 has 16 divisors (see below), whose sum is σ = 649101600. Its totient is φ = 205490560.

The previous prime is 421843313. The next prime is 421843343. The reversal of 421843342 is 243348124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421843343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63159 + ... + 69517.

It is an arithmetic number, because the mean of its divisors is an integer number (40568850).

Almost surely, 2^421843342 is an apocalyptic number.

421843342 is a deficient number, since it is larger than the sum of its proper divisors (227258258).

421843342 is a wasteful number, since it uses less digits than its factorization.

421843342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7211.

The product of its digits is 18432, while the sum is 31.

The square root of 421843342 is about 20538.8252341754. The cubic root of 421843342 is about 749.9812392344.

The spelling of 421843342 in words is "four hundred twenty-one million, eight hundred forty-three thousand, three hundred forty-two".