421250503 has 4 divisors (see below), whose sum is σ = 422816760. Its totient is φ = 419684248.

The previous prime is 421250471. The next prime is 421250521. The reversal of 421250503 is 305052124.

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

It is a cyclic number.

It is not a de Polignac number, because 421250503 - 2⁵ = 421250471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421250303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782725 + ... + 783262.

It is an arithmetic number, because the mean of its divisors is an integer number (105704190).

Almost surely, 2^421250503 is an apocalyptic number.

421250503 is a deficient number, since it is larger than the sum of its proper divisors (1566257).

421250503 is a wasteful number, since it uses less digits than its factorization.

421250503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566256.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 421250503 is about 20524.3880054924. The cubic root of 421250503 is about 749.6297449487.

The spelling of 421250503 in words is "four hundred twenty-one million, two hundred fifty thousand, five hundred three".