421345342 has 32 divisors (see below), whose sum is σ = 703551744. Its totient is φ = 187646400.

The previous prime is 421345339. The next prime is 421345367. The reversal of 421345342 is 243543124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 421345342.

It is a congruent number.

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, 267417 + ... + 268987.

It is an arithmetic number, because the mean of its divisors is an integer number (21985992).

Almost surely, 2^421345342 is an apocalyptic number.

421345342 is a deficient number, since it is larger than the sum of its proper divisors (282206402).

421345342 is a wasteful number, since it uses less digits than its factorization.

421345342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824.

The product of its digits is 11520, while the sum is 28.

The square root of 421345342 is about 20526.6982732246. The cubic root of 421345342 is about 749.6859971472.

Adding to 421345342 its reverse (243543124), we get a palindrome (664888466).

The spelling of 421345342 in words is "four hundred twenty-one million, three hundred forty-five thousand, three hundred forty-two".