420411030042021 has 4 divisors (see below), whose sum is σ = 560548040056032. Its totient is φ = 280274020028012.

The previous prime is 420411030042011. The next prime is 420411030042043. The reversal of 420411030042021 is 120240030114024.

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 not a de Polignac number, because 420411030042021 - 2³¹ = 420408882558373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420411030041982 and 420411030042000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420411030042011) 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, 70068505007001 + ... + 70068505007006.

It is an arithmetic number, because the mean of its divisors is an integer number (140137010014008).

Almost surely, 2^{420411030042021} is an apocalyptic number.

It is an amenable number.

420411030042021 is a deficient number, since it is larger than the sum of its proper divisors (140137010014011).

420411030042021 is a wasteful number, since it uses less digits than its factorization.

420411030042021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140137010014010.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 420411030042021 its reverse (120240030114024), we get a palindrome (540651060156045).

The spelling of 420411030042021 in words is "four hundred twenty trillion, four hundred eleven billion, thirty million, forty-two thousand, twenty-one".