420023024421 has 128 divisors (see below), whose sum is σ = 805832810496. Its totient is φ = 187444730880.

The previous prime is 420023024419. The next prime is 420023024429. The reversal of 420023024421 is 124420320024.

It is not a de Polignac number, because 420023024421 - 2¹ = 420023024419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420023024391 and 420023024400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420023024429) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2473375 + ... + 2637731.

It is an arithmetic number, because the mean of its divisors is an integer number (6295568832).

Almost surely, 2^420023024421 is an apocalyptic number.

It is an amenable number.

420023024421 is a deficient number, since it is larger than the sum of its proper divisors (385809786075).

420023024421 is a wasteful number, since it uses less digits than its factorization.

420023024421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164451.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 420023024421 its reverse (124420320024), we get a palindrome (544443344445).

The spelling of 420023024421 in words is "four hundred twenty billion, twenty-three million, twenty-four thousand, four hundred twenty-one".