33240142 has 8 divisors (see below), whose sum is σ = 53695656. Its totient is φ = 15341592.

The previous prime is 33240133. The next prime is 33240149. The reversal of 33240142 is 24104233.

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

It is a super-2 number, since 2×33240142² = 2209814080360328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33240149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639208 + ... + 639259.

It is an arithmetic number, because the mean of its divisors is an integer number (6711957).

Almost surely, 2^33240142 is an apocalyptic number.

33240142 is a deficient number, since it is larger than the sum of its proper divisors (20455514).

33240142 is a wasteful number, since it uses less digits than its factorization.

33240142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278482.

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

The square root of 33240142 is about 5765.4264369602. The cubic root of 33240142 is about 321.5295974596.

Adding to 33240142 its reverse (24104233), we get a palindrome (57344375).

The spelling of 33240142 in words is "thirty-three million, two hundred forty thousand, one hundred forty-two".