42685775 has 36 divisors (see below), whose sum is σ = 59173296. Its totient is φ = 30518400.

The previous prime is 42685717. The next prime is 42685777. The reversal of 42685775 is 57758624.

It is not a de Polignac number, because 42685775 - 2⁶ = 42685711 is a prime.

It is a super-3 number, since 3×42685775³ (a number of 24 digits) contains 333 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 (42685777) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 311507 + ... + 311643.

Almost surely, 2^42685775 is an apocalyptic number.

42685775 is a deficient number, since it is larger than the sum of its proper divisors (16487521).

42685775 is a wasteful number, since it uses less digits than its factorization.

42685775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 256 counting only the distinct ones).

The product of its digits is 470400, while the sum is 44.

The square root of 42685775 is about 6533.4351607711. The cubic root of 42685775 is about 349.4843426926.

The spelling of 42685775 in words is "forty-two million, six hundred eighty-five thousand, seven hundred seventy-five".