421432603 has 8 divisors (see below), whose sum is σ = 423838800. Its totient is φ = 419032320.

The previous prime is 421432589. The next prime is 421432607. The reversal of 421432603 is 306234124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421432603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421432607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251976 + ... + 253642.

It is an arithmetic number, because the mean of its divisors is an integer number (52979850).

Almost surely, 2^421432603 is an apocalyptic number.

421432603 is a deficient number, since it is larger than the sum of its proper divisors (2406197).

421432603 is a wasteful number, since it uses less digits than its factorization.

421432603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2957.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 421432603 is about 20528.8237120396. The cubic root of 421432603 is about 749.7377471234.

Adding to 421432603 its reverse (306234124), we get a palindrome (727666727).

The spelling of 421432603 in words is "four hundred twenty-one million, four hundred thirty-two thousand, six hundred three".