33542423 has 4 divisors (see below), whose sum is σ = 33576360. Its totient is φ = 33508488.

The previous prime is 33542407. The next prime is 33542449. The reversal of 33542423 is 32424533.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33542423 - 2⁴ = 33542407 is a prime.

It is a super-2 number, since 2×33542423² = 2250188281421858, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33542392 and 33542401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33542023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15440 + ... + 17477.

It is an arithmetic number, because the mean of its divisors is an integer number (8394090).

Almost surely, 2^33542423 is an apocalyptic number.

33542423 is a deficient number, since it is larger than the sum of its proper divisors (33937).

33542423 is a wasteful number, since it uses less digits than its factorization.

33542423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33936.

The product of its digits is 8640, while the sum is 26.

The square root of 33542423 is about 5791.5820809171. The cubic root of 33542423 is about 322.5013056054.

Adding to 33542423 its reverse (32424533), we get a palindrome (65966956).

The spelling of 33542423 in words is "thirty-three million, five hundred forty-two thousand, four hundred twenty-three".