42133633 has 4 divisors (see below), whose sum is σ = 44612100. Its totient is φ = 39655168.

The previous prime is 42133627. The next prime is 42133643. The reversal of 42133633 is 33633124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21594609 + 20539024 = 4647^2 + 4532^2 .

It is a cyclic number.

It is not a de Polignac number, because 42133633 - 2²⁵ = 8579201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42133598 and 42133607.

It is not an unprimeable number, because it can be changed into a prime (42133603) 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, 1239208 + ... + 1239241.

It is an arithmetic number, because the mean of its divisors is an integer number (11153025).

Almost surely, 2^42133633 is an apocalyptic number.

It is an amenable number.

42133633 is a deficient number, since it is larger than the sum of its proper divisors (2478467).

42133633 is a wasteful number, since it uses less digits than its factorization.

42133633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478466.

The product of its digits is 3888, while the sum is 25.

The square root of 42133633 is about 6491.0425202736. The cubic root of 42133633 is about 347.9709343981.

Adding to 42133633 its reverse (33633124), we get a palindrome (75766757).

The spelling of 42133633 in words is "forty-two million, one hundred thirty-three thousand, six hundred thirty-three".