420144603 has 4 divisors (see below), whose sum is σ = 560192808. Its totient is φ = 280096400.

The previous prime is 420144551. The next prime is 420144617. The reversal of 420144603 is 306441024.

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 420144603 - 2¹⁰ = 420143579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420144623) 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, 70024098 + ... + 70024103.

It is an arithmetic number, because the mean of its divisors is an integer number (140048202).

Almost surely, 2^420144603 is an apocalyptic number.

420144603 is a deficient number, since it is larger than the sum of its proper divisors (140048205).

420144603 is a wasteful number, since it uses less digits than its factorization.

420144603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140048204.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 420144603 is about 20497.4291802655. The cubic root of 420144603 is about 748.9731743693.

Adding to 420144603 its reverse (306441024), we get a palindrome (726585627).

The spelling of 420144603 in words is "four hundred twenty million, one hundred forty-four thousand, six hundred three".