420934 has 4 divisors (see below), whose sum is σ = 631404. Its totient is φ = 210466.

The previous prime is 420929. The next prime is 420941. The reversal of 420934 is 439024.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105232 + ... + 105235.

It is an arithmetic number, because the mean of its divisors is an integer number (157851).

2⁴²⁰⁹³⁴ is an apocalyptic number.

420934 is a deficient number, since it is larger than the sum of its proper divisors (210470).

420934 is a wasteful number, since it uses less digits than its factorization.

420934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210469.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 420934 is about 648.7942663125. The cubic root of 420934 is about 74.9441955255.

Adding to 420934 its reverse (439024), we get a palindrome (859958).

The spelling of 420934 in words is "four hundred twenty thousand, nine hundred thirty-four".