421344042 has 48 divisors (see below), whose sum is σ = 981955872. Its totient is φ = 120177120.

The previous prime is 421344013. The next prime is 421344089. The reversal of 421344042 is 240443124.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275893 + ... + 277415.

It is an arithmetic number, because the mean of its divisors is an integer number (20457414).

Almost surely, 2^421344042 is an apocalyptic number.

421344042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

421344042 is an abundant number, since it is smaller than the sum of its proper divisors (560611830).

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

421344042 is a wasteful number, since it uses less digits than its factorization.

421344042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483 (or 2476 counting only the distinct ones).

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

The square root of 421344042 is about 20526.6666071235. Note that the first 4 decimals coincide. The cubic root of 421344042 is about 749.6852261306.

Adding to 421344042 its reverse (240443124), we get a palindrome (661787166).

The spelling of 421344042 in words is "four hundred twenty-one million, three hundred forty-four thousand, forty-two".