421213120434 has 64 divisors (see below), whose sum is σ = 967247585280. Its totient is φ = 135731209680.

The previous prime is 421213120423. The next prime is 421213120519. The reversal of 421213120434 is 434021312124.

421213120434 is a `hidden beast` number, since 4 + 2 + 1 + 213 + 12 + 0 + 434 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 421213120398 and 421213120407.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1452427 + ... + 1718129.

It is an arithmetic number, because the mean of its divisors is an integer number (15113243520).

Almost surely, 2^421213120434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421213120434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483623792640).

421213120434 is an abundant number, since it is smaller than the sum of its proper divisors (546034464846).

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

421213120434 is a wasteful number, since it uses less digits than its factorization.

421213120434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266692 (or 266686 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 421213120434 its reverse (434021312124), we get a palindrome (855234432558).

The spelling of 421213120434 in words is "four hundred twenty-one billion, two hundred thirteen million, one hundred twenty thousand, four hundred thirty-four".