33420042423 has 16 divisors (see below), whose sum is σ = 50350348800. Its totient is φ = 21902399640.

The previous prime is 33420042413. The next prime is 33420042431. The reversal of 33420042423 is 32424002433.

33420042423 is a `hidden beast` number, since 3 + 34 + 200 + 4 + 2 + 423 = 666.

It is not a de Polignac number, because 33420042423 - 2¹⁸ = 33419780279 is a prime.

It is a super-2 number, since 2×33420042423² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33420042413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10488063 + ... + 10491248.

It is an arithmetic number, because the mean of its divisors is an integer number (3146896800).

Almost surely, 2^33420042423 is an apocalyptic number.

33420042423 is a deficient number, since it is larger than the sum of its proper divisors (16930306377).

33420042423 is a wasteful number, since it uses less digits than its factorization.

33420042423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20979379 (or 20979373 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 33420042423 its reverse (32424002433), we get a palindrome (65844044856).

The spelling of 33420042423 in words is "thirty-three billion, four hundred twenty million, forty-two thousand, four hundred twenty-three".