420243122322203 has 16 divisors (see below), whose sum is σ = 422729256438720. Its totient is φ = 417764374680576.

The previous prime is 420243122322193. The next prime is 420243122322211. The reversal of 420243122322203 is 302223221342024.

It is a cyclic number.

It is not a de Polignac number, because 420243122322203 - 2³⁰ = 420242048580379 is a prime.

It is a super-2 number, since 2×420243122322203² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420243122322203.

It is not an unprimeable number, because it can be changed into a prime (420243122342203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335112851 + ... + 336364547.

It is an arithmetic number, because the mean of its divisors is an integer number (26420578527420).

Almost surely, 2^{420243122322203} is an apocalyptic number.

420243122322203 is a deficient number, since it is larger than the sum of its proper divisors (2486134116517).

420243122322203 is a wasteful number, since it uses less digits than its factorization.

420243122322203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254646.

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 420243122322203 its reverse (302223221342024), we get a palindrome (722466343664227).

The spelling of 420243122322203 in words is "four hundred twenty trillion, two hundred forty-three billion, one hundred twenty-two million, three hundred twenty-two thousand, two hundred three".