420431201045543 has 4 divisors (see below), whose sum is σ = 420435752096448. Its totient is φ = 420426649994640.

The previous prime is 420431201045533. The next prime is 420431201045561. The reversal of 420431201045543 is 345540102134024.

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 420431201045543 - 2³⁶ = 420362481568807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420431201045497 and 420431201045506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420431201045533) 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, 2275386878 + ... + 2275571643.

It is an arithmetic number, because the mean of its divisors is an integer number (105108938024112).

Almost surely, 2^{420431201045543} is an apocalyptic number.

420431201045543 is a deficient number, since it is larger than the sum of its proper divisors (4551050905).

420431201045543 is an equidigital number, since it uses as much as digits as its factorization.

420431201045543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551050904.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 420431201045543 its reverse (345540102134024), we get a palindrome (765971303179567).

The spelling of 420431201045543 in words is "four hundred twenty trillion, four hundred thirty-one billion, two hundred one million, forty-five thousand, five hundred forty-three".