421305499 has 8 divisors (see below), whose sum is σ = 427008960. Its totient is φ = 415611456.

The previous prime is 421305481. The next prime is 421305503. The reversal of 421305499 is 994503124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421305499 - 2⁹ = 421304987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421305419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168849 + ... + 171325.

It is an arithmetic number, because the mean of its divisors is an integer number (53376120).

Almost surely, 2^421305499 is an apocalyptic number.

421305499 is a deficient number, since it is larger than the sum of its proper divisors (5703461).

421305499 is a wasteful number, since it uses less digits than its factorization.

421305499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4709.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 421305499 is about 20525.7277337492. The cubic root of 421305499 is about 749.6623659531.

The spelling of 421305499 in words is "four hundred twenty-one million, three hundred five thousand, four hundred ninety-nine".