20423042133 has 8 divisors (see below), whose sum is σ = 29325393888. Its totient is φ = 12568025904.

The previous prime is 20423042083. The next prime is 20423042161. The reversal of 20423042133 is 33124032402.

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

It is not a de Polignac number, because 20423042133 - 2¹⁸ = 20422779989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423044133) 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, 261833835 + ... + 261833912.

It is an arithmetic number, because the mean of its divisors is an integer number (3665674236).

Almost surely, 2^20423042133 is an apocalyptic number.

It is an amenable number.

20423042133 is a deficient number, since it is larger than the sum of its proper divisors (8902351755).

20423042133 is a wasteful number, since it uses less digits than its factorization.

20423042133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523667763.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20423042133 its reverse (33124032402), we get a palindrome (53547074535).

The spelling of 20423042133 in words is "twenty billion, four hundred twenty-three million, forty-two thousand, one hundred thirty-three".