421234 has 16 divisors (see below), whose sum is σ = 707616. Its totient is φ = 186400.

The previous prime is 421207. The next prime is 421241. The reversal of 421234 is 432124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 669 + ... + 1135.

It is an arithmetic number, because the mean of its divisors is an integer number (44226).

2⁴²¹²³⁴ is an apocalyptic number.

421234 is a deficient number, since it is larger than the sum of its proper divisors (286382).

421234 is a wasteful number, since it uses less digits than its factorization.

421234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521.

The product of its digits is 192, while the sum is 16.

The square root of 421234 is about 649.0254232309. The cubic root of 421234 is about 74.9619955602.

Adding to 421234 its reverse (432124), we get a palindrome (853358).

The spelling of 421234 in words is "four hundred twenty-one thousand, two hundred thirty-four".