33420045 has 16 divisors (see below), whose sum is σ = 56617920. Its totient is φ = 16775424.

The previous prime is 33420041. The next prime is 33420047. The reversal of 33420045 is 54002433.

It is a happy number.

It is not a de Polignac number, because 33420045 - 2² = 33420041 is a prime.

It is a super-2 number, since 2×33420045² = 2233798815604050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33420041) 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 15 ways as a sum of consecutive naturals, for example, 65275 + ... + 65784.

It is an arithmetic number, because the mean of its divisors is an integer number (3538620).

Almost surely, 2^33420045 is an apocalyptic number.

It is an amenable number.

33420045 is a deficient number, since it is larger than the sum of its proper divisors (23197875).

33420045 is a wasteful number, since it uses less digits than its factorization.

33420045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131084.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 33420045 is about 5781.0072651745. The cubic root of 33420045 is about 322.1086172156.

Adding to 33420045 its reverse (54002433), we get a palindrome (87422478).

The spelling of 33420045 in words is "thirty-three million, four hundred twenty thousand, forty-five".