421023583 has 4 divisors (see below), whose sum is σ = 421068960. Its totient is φ = 420978208.

The previous prime is 421023571. The next prime is 421023601. The reversal of 421023583 is 385320124.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421023583 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 (421023523) 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, 3178 + ... + 29191.

It is an arithmetic number, because the mean of its divisors is an integer number (105267240).

Almost surely, 2^421023583 is an apocalyptic number.

421023583 is a deficient number, since it is larger than the sum of its proper divisors (45377).

421023583 is a wasteful number, since it uses less digits than its factorization.

421023583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45376.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 421023583 is about 20518.8592031818. The cubic root of 421023583 is about 749.4951167928.

The spelling of 421023583 in words is "four hundred twenty-one million, twenty-three thousand, five hundred eighty-three".