33240421 has 8 divisors (see below), whose sum is σ = 34360704. Its totient is φ = 32137440.

The previous prime is 33240391. The next prime is 33240433. The reversal of 33240421 is 12404233.

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 33240421 - 2⁹ = 33239909 is a prime.

It is a super-2 number, since 2×33240421² = 2209851176514482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33240461) 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, 360 + ... + 8161.

It is an arithmetic number, because the mean of its divisors is an integer number (4295088).

Almost surely, 2^33240421 is an apocalyptic number.

It is an amenable number.

33240421 is a deficient number, since it is larger than the sum of its proper divisors (1120283).

33240421 is an equidigital number, since it uses as much as digits as its factorization.

33240421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8651.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 33240421 is about 5765.4506328647. The cubic root of 33240421 is about 321.5304970397.

Adding to 33240421 its reverse (12404233), we get a palindrome (45644654).

The spelling of 33240421 in words is "thirty-three million, two hundred forty thousand, four hundred twenty-one".