420111424321 has 4 divisors (see below), whose sum is σ = 429049965312. Its totient is φ = 411172883332.

The previous prime is 420111424309. The next prime is 420111424357. The reversal of 420111424321 is 123424111024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420111424321 is a prime.

It is a super-2 number, since 2×420111424321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420111424301) 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, 4469270425 + ... + 4469270518.

It is an arithmetic number, because the mean of its divisors is an integer number (107262491328).

Almost surely, 2^420111424321 is an apocalyptic number.

It is an amenable number.

420111424321 is a deficient number, since it is larger than the sum of its proper divisors (8938540991).

420111424321 is an equidigital number, since it uses as much as digits as its factorization.

420111424321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8938540990.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 420111424321 its reverse (123424111024), we get a palindrome (543535535345).

The spelling of 420111424321 in words is "four hundred twenty billion, one hundred eleven million, four hundred twenty-four thousand, three hundred twenty-one".