421266 has 16 divisors (see below), whose sum is σ = 857088. Its totient is φ = 138000.

The previous prime is 421241. The next prime is 421273. The reversal of 421266 is 662124.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210 + ... + 941.

It is an arithmetic number, because the mean of its divisors is an integer number (53568).

2⁴²¹²⁶⁶ is an apocalyptic number.

421266 is an abundant number, since it is smaller than the sum of its proper divisors (435822).

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

421266 is a wasteful number, since it uses less digits than its factorization.

421266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217.

The product of its digits is 576, while the sum is 21.

The square root of 421266 is about 649.0500751098. The cubic root of 421266 is about 74.9638937317.

It can be divided in two parts, 4212 and 66, that added together give a triangular number (4278 = T₉₂).

The spelling of 421266 in words is "four hundred twenty-one thousand, two hundred sixty-six".