42086169 has 16 divisors (see below), whose sum is σ = 66018240. Its totient is φ = 26406720.

The previous prime is 42086147. The next prime is 42086183. The reversal of 42086169 is 96168024.

It is not a de Polignac number, because 42086169 - 2⁷ = 42086041 is a prime.

It is a super-2 number, since 2×42086169² = 3542491242193122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42086119) 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 in 15 ways as a sum of consecutive naturals, for example, 45387 + ... + 46304.

It is an arithmetic number, because the mean of its divisors is an integer number (4126140).

Almost surely, 2^42086169 is an apocalyptic number.

It is an amenable number.

42086169 is a deficient number, since it is larger than the sum of its proper divisors (23932071).

42086169 is a wasteful number, since it uses less digits than its factorization.

42086169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91717 (or 91711 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 42086169 is about 6487.3853747099. The cubic root of 42086169 is about 347.8402209435.

The spelling of 42086169 in words is "forty-two million, eighty-six thousand, one hundred sixty-nine".