421035403 has 4 divisors (see below), whose sum is σ = 430826968. Its totient is φ = 411243840.

The previous prime is 421035389. The next prime is 421035443. The reversal of 421035403 is 304530124.

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 421035403 - 2⁹ = 421034891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421035443) 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, 4895718 + ... + 4895803.

It is an arithmetic number, because the mean of its divisors is an integer number (107706742).

Almost surely, 2^421035403 is an apocalyptic number.

421035403 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

421035403 is a deficient number, since it is larger than the sum of its proper divisors (9791565).

421035403 is an equidigital number, since it uses as much as digits as its factorization.

421035403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9791564.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 421035403 is about 20519.1472288689. The cubic root of 421035403 is about 749.5021306116.

Adding to 421035403 its reverse (304530124), we get a palindrome (725565527).

The spelling of 421035403 in words is "four hundred twenty-one million, thirty-five thousand, four hundred three".