33042140 has 48 divisors (see below), whose sum is σ = 73936800. Its totient is φ = 12367872.

The previous prime is 33042137. The next prime is 33042143. The reversal of 33042140 is 4124033.

It is an interprime number because it is at equal distance from previous prime (33042137) and next prime (33042143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33042143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33332 + ... + 34308.

It is an arithmetic number, because the mean of its divisors is an integer number (1540350).

Almost surely, 2^33042140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33042140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36968400).

33042140 is an abundant number, since it is smaller than the sum of its proper divisors (40894660).

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

33042140 is a wasteful number, since it uses less digits than its factorization.

33042140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 33042140 is about 5748.2292925735. The cubic root of 33042140 is about 320.8899057303.

Adding to 33042140 its reverse (4124033), we get a palindrome (37166173).

The spelling of 33042140 in words is "thirty-three million, forty-two thousand, one hundred forty".