421044342 has 16 divisors (see below), whose sum is σ = 853949952. Its totient is φ = 138371240.

The previous prime is 421044319. The next prime is 421044383. The reversal of 421044342 is 243440124.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493758 + ... + 494609.

It is an arithmetic number, because the mean of its divisors is an integer number (53371872).

Almost surely, 2^421044342 is an apocalyptic number.

421044342 is an abundant number, since it is smaller than the sum of its proper divisors (432905610).

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

421044342 is a wasteful number, since it uses less digits than its factorization.

421044342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988443.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 421044342 is about 20519.3650486559. The cubic root of 421044342 is about 749.5074347991.

Adding to 421044342 its reverse (243440124), we get a palindrome (664484466).

The spelling of 421044342 in words is "four hundred twenty-one million, forty-four thousand, three hundred forty-two".