421634234 has 16 divisors (see below), whose sum is σ = 723178368. Its totient is φ = 180606192.

The previous prime is 421634231. The next prime is 421634287. The reversal of 421634234 is 432436124.

It is a junction number, because it is equal to n+sod(n) for n = 421634197 and 421634206.

It is not an unprimeable number, because it can be changed into a prime (421634231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24587 + ... + 38049.

It is an arithmetic number, because the mean of its divisors is an integer number (45198648).

Almost surely, 2^421634234 is an apocalyptic number.

421634234 is a deficient number, since it is larger than the sum of its proper divisors (301544134).

421634234 is a wasteful number, since it uses less digits than its factorization.

421634234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15709.

The product of its digits is 13824, while the sum is 29.

The square root of 421634234 is about 20533.7340491202. The cubic root of 421634234 is about 749.8572967013.

The spelling of 421634234 in words is "four hundred twenty-one million, six hundred thirty-four thousand, two hundred thirty-four".