42075869 has 4 divisors (see below), whose sum is σ = 45900960. Its totient is φ = 38250780.

The previous prime is 42075841. The next prime is 42075871. The reversal of 42075869 is 96857024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42075869 - 2²⁰ = 41027293 is a prime.

It is a super-2 number, since 2×42075869² = 3540757504210322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42075569) 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 3 ways as a sum of consecutive naturals, for example, 1912529 + ... + 1912550.

It is an arithmetic number, because the mean of its divisors is an integer number (11475240).

Almost surely, 2^42075869 is an apocalyptic number.

It is an amenable number.

42075869 is a deficient number, since it is larger than the sum of its proper divisors (3825091).

42075869 is a wasteful number, since it uses less digits than its factorization.

42075869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3825090.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 42075869 is about 6486.5914778102. The cubic root of 42075869 is about 347.8118422887.

The spelling of 42075869 in words is "forty-two million, seventy-five thousand, eight hundred sixty-nine".