421345343 has 4 divisors (see below), whose sum is σ = 423235008. Its totient is φ = 419455680.

The previous prime is 421345339. The next prime is 421345367. The reversal of 421345343 is 343543124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421345343 - 2² = 421345339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421345333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944498 + ... + 944943.

It is an arithmetic number, because the mean of its divisors is an integer number (105808752).

Almost surely, 2^421345343 is an apocalyptic number.

421345343 is a deficient number, since it is larger than the sum of its proper divisors (1889665).

421345343 is a wasteful number, since it uses less digits than its factorization.

421345343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889664.

The product of its digits is 17280, while the sum is 29.

The square root of 421345343 is about 20526.6982975831. The cubic root of 421345343 is about 749.6859977403.

Adding to 421345343 its reverse (343543124), we get a palindrome (764888467).

The spelling of 421345343 in words is "four hundred twenty-one million, three hundred forty-five thousand, three hundred forty-three".