42033663 has 24 divisors (see below), whose sum is σ = 69768608. Its totient is φ = 23887872.

The previous prime is 42033659. The next prime is 42033679. The reversal of 42033663 is 36633024.

It is not a de Polignac number, because 42033663 - 2² = 42033659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42033623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10431 + ... + 13887.

Almost surely, 2^42033663 is an apocalyptic number.

42033663 is a deficient number, since it is larger than the sum of its proper divisors (27734945).

42033663 is a wasteful number, since it uses less digits than its factorization.

42033663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663 (or 3660 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The square root of 42033663 is about 6483.3373350459. The cubic root of 42033663 is about 347.6955075337.

Adding to 42033663 its reverse (36633024), we get a palindrome (78666687).

The spelling of 42033663 in words is "forty-two million, thirty-three thousand, six hundred sixty-three".