423122021 has 8 divisors (see below), whose sum is σ = 494814144. Its totient is φ = 354241440.

The previous prime is 423122003. The next prime is 423122033. The reversal of 423122021 is 120221324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423122021 - 2⁶ = 423121957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423122221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702560 + ... + 703161.

It is an arithmetic number, because the mean of its divisors is an integer number (61851768).

Almost surely, 2^423122021 is an apocalyptic number.

It is an amenable number.

423122021 is a deficient number, since it is larger than the sum of its proper divisors (71692123).

423122021 is a wasteful number, since it uses less digits than its factorization.

423122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405771.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 423122021 is about 20569.9300193268. The cubic root of 423122021 is about 750.7382484879.

Adding to 423122021 its reverse (120221324), we get a palindrome (543343345).

The spelling of 423122021 in words is "four hundred twenty-three million, one hundred twenty-two thousand, twenty-one".