422499 has 32 divisors (see below), whose sum is σ = 737280. Its totient is φ = 208800.

The previous prime is 422479. The next prime is 422537. The reversal of 422499 is 994224.

It is a Cunningham number, because it is equal to 650²-1.

It is not a de Polignac number, because 422499 - 2⁸ = 422243 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

422499 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (422459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7132 + ... + 7190.

It is an arithmetic number, because the mean of its divisors is an integer number (23040).

2⁴²²⁴⁹⁹ is an apocalyptic number.

422499 is a deficient number, since it is larger than the sum of its proper divisors (314781).

422499 is a wasteful number, since it uses less digits than its factorization.

422499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111.

The product of its digits is 5184, while the sum is 30.

The square root of 422499 is about 649.9992307688. Note that the first 3 decimals coincide. The cubic root of 422499 is about 75.0369595613.

The spelling of 422499 in words is "four hundred twenty-two thousand, four hundred ninety-nine".