423022521 has 16 divisors (see below), whose sum is σ = 577886400. Its totient is φ = 275146560.

The previous prime is 423022499. The next prime is 423022547. The reversal of 423022521 is 125220324.

It is not a de Polignac number, because 423022521 - 2⁹ = 423022009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423022571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21430 + ... + 36128.

It is an arithmetic number, because the mean of its divisors is an integer number (36117900).

Almost surely, 2^423022521 is an apocalyptic number.

It is an amenable number.

423022521 is a deficient number, since it is larger than the sum of its proper divisors (154863879).

423022521 is a wasteful number, since it uses less digits than its factorization.

423022521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14936.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 423022521 is about 20567.5112981615. The cubic root of 423022521 is about 750.6793968186.

Adding to 423022521 its reverse (125220324), we get a palindrome (548242845).

The spelling of 423022521 in words is "four hundred twenty-three million, twenty-two thousand, five hundred twenty-one".