421156 has 12 divisors (see below), whose sum is σ = 742000. Its totient is φ = 209160.

The previous prime is 421147. The next prime is 421159. The reversal of 421156 is 651124.

It is not an unprimeable number, because it can be changed into a prime (421159) by changing a digit.

421156 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595 + ... + 1093.

2⁴²¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

421156 is a deficient number, since it is larger than the sum of its proper divisors (320844).

421156 is a wasteful number, since it uses less digits than its factorization.

421156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714 (or 712 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 421156 is about 648.9653303529. The cubic root of 421156 is about 74.9573683644.

The spelling of 421156 in words is "four hundred twenty-one thousand, one hundred fifty-six".