421996 has 6 divisors (see below), whose sum is σ = 738500. Its totient is φ = 210996.

The previous prime is 421987. The next prime is 421997. The reversal of 421996 is 699124.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (421997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52746 + ... + 52753.

2⁴²¹⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

421996 is a deficient number, since it is larger than the sum of its proper divisors (316504).

421996 is a wasteful number, since it uses less digits than its factorization.

421996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105503 (or 105501 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 421996 is about 649.6121920038. The cubic root of 421996 is about 75.0071696850.

The spelling of 421996 in words is "four hundred twenty-one thousand, nine hundred ninety-six".