42366817 has 4 divisors (see below), whose sum is σ = 43400196. Its totient is φ = 41333440.

The previous prime is 42366799. The next prime is 42366829. The reversal of 42366817 is 71866324.

42366817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4124961 + 38241856 = 2031^2 + 6184^2 .

It is a cyclic number.

It is not a de Polignac number, because 42366817 - 2⁷ = 42366689 is a prime.

It is a super-2 number, since 2×42366817² = 3589894365422978, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (42366617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516628 + ... + 516709.

It is an arithmetic number, because the mean of its divisors is an integer number (10850049).

Almost surely, 2^42366817 is an apocalyptic number.

It is an amenable number.

42366817 is a deficient number, since it is larger than the sum of its proper divisors (1033379).

42366817 is a wasteful number, since it uses less digits than its factorization.

42366817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033378.

The product of its digits is 48384, while the sum is 37.

The square root of 42366817 is about 6508.9797203556. The cubic root of 42366817 is about 348.6116895226.

The spelling of 42366817 in words is "forty-two million, three hundred sixty-six thousand, eight hundred seventeen".