421210434 has 8 divisors (see below), whose sum is σ = 842420880. Its totient is φ = 140403476.

The previous prime is 421210421. The next prime is 421210481. The reversal of 421210434 is 434012124.

It is a sphenic number, since it is the product of 3 distinct primes.

421210434 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 421210434.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35100864 + ... + 35100875.

It is an arithmetic number, because the mean of its divisors is an integer number (105302610).

Almost surely, 2^421210434 is an apocalyptic number.

421210434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

421210434 is a wasteful number, since it uses less digits than its factorization.

421210434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70201744.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421210434 is about 20523.4118508595. The cubic root of 421210434 is about 749.6059761410.

Adding to 421210434 its reverse (434012124), we get a palindrome (855222558).

The spelling of 421210434 in words is "four hundred twenty-one million, two hundred ten thousand, four hundred thirty-four".