421234103 has 4 divisors (see below), whose sum is σ = 421851528. Its totient is φ = 420616680.

The previous prime is 421234061. The next prime is 421234127. The reversal of 421234103 is 301432124.

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 421234103 - 2⁶ = 421234039 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 (421234003) 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, 307688 + ... + 309053.

It is an arithmetic number, because the mean of its divisors is an integer number (105462882).

Almost surely, 2^421234103 is an apocalyptic number.

421234103 is a deficient number, since it is larger than the sum of its proper divisors (617425).

421234103 is an equidigital number, since it uses as much as digits as its factorization.

421234103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617424.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 421234103 is about 20523.9884769019. The cubic root of 421234103 is about 749.6200167013.

Adding to 421234103 its reverse (301432124), we get a palindrome (722666227).

The spelling of 421234103 in words is "four hundred twenty-one million, two hundred thirty-four thousand, one hundred three".