421502 has 8 divisors (see below), whose sum is σ = 641136. Its totient is φ = 207792.

The previous prime is 421501. The next prime is 421517. The reversal of 421502 is 205124.

421502 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421501) 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, 1298 + ... + 1589.

It is an arithmetic number, because the mean of its divisors is an integer number (80142).

2⁴²¹⁵⁰² is an apocalyptic number.

421502 is a deficient number, since it is larger than the sum of its proper divisors (219634).

421502 is a wasteful number, since it uses less digits than its factorization.

421502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 421502 is about 649.2318538088. The cubic root of 421502 is about 74.9778897788.

Adding to 421502 its reverse (205124), we get a palindrome (626626).

The spelling of 421502 in words is "four hundred twenty-one thousand, five hundred two".