33124421 has 4 divisors (see below), whose sum is σ = 36135744. Its totient is φ = 30113100.

The previous prime is 33124373. The next prime is 33124447. The reversal of 33124421 is 12442133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12442133 = 11 ⋅1131103.

It is a cyclic number.

It is not a de Polignac number, because 33124421 - 2¹⁴ = 33108037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33124393 and 33124402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33124121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1505645 + ... + 1505666.

It is an arithmetic number, because the mean of its divisors is an integer number (9033936).

Almost surely, 2^33124421 is an apocalyptic number.

It is an amenable number.

33124421 is a deficient number, since it is larger than the sum of its proper divisors (3011323).

33124421 is a wasteful number, since it uses less digits than its factorization.

33124421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011322.

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

The square root of 33124421 is about 5755.3819160852. The cubic root of 33124421 is about 321.1560432179.

Adding to 33124421 its reverse (12442133), we get a palindrome (45566554).

The spelling of 33124421 in words is "thirty-three million, one hundred twenty-four thousand, four hundred twenty-one".