42233661 has 12 divisors (see below), whose sum is σ = 64592892. Its totient is φ = 26499456.

The previous prime is 42233641. The next prime is 42233669. The reversal of 42233661 is 16633224.

It can be written as a sum of positive squares in 2 ways, for example, as 11431161 + 30802500 = 3381^2 + 5550^2 .

It is not a de Polignac number, because 42233661 - 2⁵ = 42233629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42233669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137866 + ... + 138171.

It is an arithmetic number, because the mean of its divisors is an integer number (5382741).

Almost surely, 2^42233661 is an apocalyptic number.

It is an amenable number.

42233661 is a deficient number, since it is larger than the sum of its proper divisors (22359231).

42233661 is a wasteful number, since it uses less digits than its factorization.

42233661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276060 (or 276057 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 42233661 is about 6498.7430323102. The cubic root of 42233661 is about 348.2460853551.

Adding to 42233661 its reverse (16633224), we get a palindrome (58866885).

The spelling of 42233661 in words is "forty-two million, two hundred thirty-three thousand, six hundred sixty-one".