42033021 has 8 divisors (see below), whose sum is σ = 56075520. Its totient is φ = 28006272.

The previous prime is 42033007. The next prime is 42033031. The reversal of 42033021 is 12033024.

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

It is not a de Polignac number, because 42033021 - 2⁵ = 42032989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42033031) 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, 5581 + ... + 10733.

It is an arithmetic number, because the mean of its divisors is an integer number (7009440).

Almost surely, 2^42033021 is an apocalyptic number.

It is an amenable number.

42033021 is a deficient number, since it is larger than the sum of its proper divisors (14042499).

42033021 is a wasteful number, since it uses less digits than its factorization.

42033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7875.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 42033021 is about 6483.2878233193. The cubic root of 42033021 is about 347.6937373521.

Adding to 42033021 its reverse (12033024), we get a palindrome (54066045).

The spelling of 42033021 in words is "forty-two million, thirty-three thousand, twenty-one".