421499 has 4 divisors (see below), whose sum is σ = 453936. Its totient is φ = 389064.

The previous prime is 421493. The next prime is 421501. The reversal of 421499 is 994124.

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

It is not a de Polignac number, because 421499 - 2⁴ = 421483 is a prime.

It is a super-2 number, since 2×421499² = 355322814002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16199 + ... + 16224.

It is an arithmetic number, because the mean of its divisors is an integer number (113484).

2⁴²¹⁴⁹⁹ is an apocalyptic number.

421499 is a deficient number, since it is larger than the sum of its proper divisors (32437).

421499 is a wasteful number, since it uses less digits than its factorization.

421499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32436.

The product of its digits is 2592, while the sum is 29.

The square root of 421499 is about 649.2295433820. The cubic root of 421499 is about 74.9777118957.

The spelling of 421499 in words is "four hundred twenty-one thousand, four hundred ninety-nine".