42133309 has 8 divisors (see below), whose sum is σ = 45384192. Its totient is φ = 39000720.

The previous prime is 42133297. The next prime is 42133313. The reversal of 42133309 is 90333124.

It is a happy number.

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 42133309 - 2⁵ = 42133277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42133339) 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, 28834 + ... + 30259.

It is an arithmetic number, because the mean of its divisors is an integer number (5673024).

Almost surely, 2^42133309 is an apocalyptic number.

It is an amenable number.

42133309 is a deficient number, since it is larger than the sum of its proper divisors (3250883).

42133309 is a wasteful number, since it uses less digits than its factorization.

42133309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59147.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 42133309 is about 6491.0175627555. The cubic root of 42133309 is about 347.9700424513.

The spelling of 42133309 in words is "forty-two million, one hundred thirty-three thousand, three hundred nine".