423021533 has 8 divisors (see below), whose sum is σ = 461725920. Its totient is φ = 384358480.

The previous prime is 423021509. The next prime is 423021569. The reversal of 423021533 is 335120324.

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

It is not a de Polignac number, because 423021533 - 2¹⁶ = 422955997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423021499 and 423021508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423021583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13466 + ... + 32052.

It is an arithmetic number, because the mean of its divisors is an integer number (57715740).

Almost surely, 2^423021533 is an apocalyptic number.

It is an amenable number.

423021533 is a deficient number, since it is larger than the sum of its proper divisors (38704387).

423021533 is a wasteful number, since it uses less digits than its factorization.

423021533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20667.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 423021533 is about 20567.4872796849. The cubic root of 423021533 is about 750.6788123959.

Adding to 423021533 its reverse (335120324), we get a palindrome (758141857).

It can be divided in two parts, 42302 and 1533, that multiplied together give a triangular number (64848966 = T₁₁₃₈₈).

The spelling of 423021533 in words is "four hundred twenty-three million, twenty-one thousand, five hundred thirty-three".