420343521043 has 16 divisors (see below), whose sum is σ = 429437376000. Its totient is φ = 411293675520.

The previous prime is 420343521023. The next prime is 420343521061. The reversal of 420343521043 is 340125343024.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420343521043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420343520996 and 420343521014.

It is not an unprimeable number, because it can be changed into a prime (420343521023) 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, 80693023 + ... + 80698231.

It is an arithmetic number, because the mean of its divisors is an integer number (26839836000).

Almost surely, 2^420343521043 is an apocalyptic number.

420343521043 is a deficient number, since it is larger than the sum of its proper divisors (9093854957).

420343521043 is a wasteful number, since it uses less digits than its factorization.

420343521043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9102.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 420343521043 its reverse (340125343024), we get a palindrome (760468864067).

The spelling of 420343521043 in words is "four hundred twenty billion, three hundred forty-three million, five hundred twenty-one thousand, forty-three".