33430421 has 8 divisors (see below), whose sum is σ = 34038144. Its totient is φ = 32826640.

The previous prime is 33430373. The next prime is 33430427. The reversal of 33430421 is 12403433.

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

It is a cyclic number.

It is not a de Polignac number, because 33430421 - 2⁶ = 33430357 is a prime.

It is a super-2 number, since 2×33430421² = 2235186096474482, 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 = 33430393 and 33430402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33430427) 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, 20000 + ... + 21606.

It is an arithmetic number, because the mean of its divisors is an integer number (4254768).

Almost surely, 2^33430421 is an apocalyptic number.

It is an amenable number.

33430421 is a deficient number, since it is larger than the sum of its proper divisors (607723).

33430421 is a wasteful number, since it uses less digits than its factorization.

33430421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 33430421 is about 5781.9046169926. The cubic root of 33430421 is about 322.1419490397.

Adding to 33430421 its reverse (12403433), we get a palindrome (45833854).

The spelling of 33430421 in words is "thirty-three million, four hundred thirty thousand, four hundred twenty-one".