42188933 has 2 divisors, whose sum is σ = 42188934. Its totient is φ = 42188932.

The previous prime is 42188921. The next prime is 42188941. The reversal of 42188933 is 33988124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37724164 + 4464769 = 6142^2 + 2113^2 .

It is a cyclic number.

It is not a de Polignac number, because 42188933 - 2¹⁰ = 42187909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42187933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21094466 + 21094467.

It is an arithmetic number, because the mean of its divisors is an integer number (21094467).

Almost surely, 2^42188933 is an apocalyptic number.

It is an amenable number.

42188933 is a deficient number, since it is larger than the sum of its proper divisors (1).

42188933 is an equidigital number, since it uses as much as digits as its factorization.

42188933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 38.

The square root of 42188933 is about 6495.3008398380. The cubic root of 42188933 is about 348.1231040448.

The spelling of 42188933 in words is "forty-two million, one hundred eighty-eight thousand, nine hundred thirty-three".