33121424 has 20 divisors (see below), whose sum is σ = 73340544. Its totient is φ = 14194848.

The previous prime is 33121411. The next prime is 33121441. The reversal of 33121424 is 42412133.

It is a junction number, because it is equal to n+sod(n) for n = 33121396 and 33121405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147752 + ... + 147975.

Almost surely, 2^33121424 is an apocalyptic number.

It is an amenable number.

33121424 is an abundant number, since it is smaller than the sum of its proper divisors (40219120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33121424 is a wasteful number, since it uses less digits than its factorization.

33121424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295742 (or 295736 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 33121424 is about 5755.1215451978. The cubic root of 33121424 is about 321.1463571750.

Adding to 33121424 its reverse (42412133), we get a palindrome (75533557).

The spelling of 33121424 in words is "thirty-three million, one hundred twenty-one thousand, four hundred twenty-four".