420340444203 has 4 divisors (see below), whose sum is σ = 560453925608. Its totient is φ = 280226962800.

The previous prime is 420340444169. The next prime is 420340444219. The reversal of 420340444203 is 302444043024.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-420340444203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420340404203) 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, 70056740698 + ... + 70056740703.

It is an arithmetic number, because the mean of its divisors is an integer number (140113481402).

Almost surely, 2^420340444203 is an apocalyptic number.

420340444203 is a deficient number, since it is larger than the sum of its proper divisors (140113481405).

420340444203 is a wasteful number, since it uses less digits than its factorization.

420340444203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140113481404.

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 420340444203 its reverse (302444043024), we get a palindrome (722784487227).

The spelling of 420340444203 in words is "four hundred twenty billion, three hundred forty million, four hundred forty-four thousand, two hundred three".