423032102021 has 4 divisors (see below), whose sum is σ = 423033522444. Its totient is φ = 423030681600.

The previous prime is 423032101939. The next prime is 423032102041. The reversal of 423032102021 is 120201230324.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 863536996 + 422168565025 = 29386^2 + 649745^2 .

It is a cyclic number.

It is not a de Polignac number, because 423032102021 - 2¹⁸ = 423031839877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423032101984 and 423032102002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423032102041) 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, 72770 + ... + 922691.

It is an arithmetic number, because the mean of its divisors is an integer number (105758380611).

Almost surely, 2^423032102021 is an apocalyptic number.

It is an amenable number.

423032102021 is a deficient number, since it is larger than the sum of its proper divisors (1420423).

423032102021 is an equidigital number, since it uses as much as digits as its factorization.

423032102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420422.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 423032102021 its reverse (120201230324), we get a palindrome (543233332345).

The spelling of 423032102021 in words is "four hundred twenty-three billion, thirty-two million, one hundred two thousand, twenty-one".