42233887 has 2 divisors, whose sum is σ = 42233888. Its totient is φ = 42233886.

The previous prime is 42233879. The next prime is 42233927. The reversal of 42233887 is 78833224.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42233887 - 2³ = 42233879 is a prime.

It is a super-2 number, since 2×42233887² = 3567402422257538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42293887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21116943 + 21116944.

It is an arithmetic number, because the mean of its divisors is an integer number (21116944).

Almost surely, 2^42233887 is an apocalyptic number.

42233887 is a deficient number, since it is larger than the sum of its proper divisors (1).

42233887 is an equidigital number, since it uses as much as digits as its factorization.

42233887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 37.

The square root of 42233887 is about 6498.7604202648. The cubic root of 42233887 is about 348.2467065301.

The spelling of 42233887 in words is "forty-two million, two hundred thirty-three thousand, eight hundred eighty-seven".