42688071 has 12 divisors (see below), whose sum is σ = 65287872. Its totient is φ = 26784576.

The previous prime is 42688057. The next prime is 42688109. The reversal of 42688071 is 17088624.

It is not a de Polignac number, because 42688071 - 2⁶ = 42688007 is a prime.

It is a super-3 number, since 3×42688071³ (a number of 24 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42688021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139351 + ... + 139656.

It is an arithmetic number, because the mean of its divisors is an integer number (5440656).

Almost surely, 2^42688071 is an apocalyptic number.

42688071 is a deficient number, since it is larger than the sum of its proper divisors (22599801).

42688071 is a wasteful number, since it uses less digits than its factorization.

42688071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279030 (or 279027 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 42688071 is about 6533.6108699554. The cubic root of 42688071 is about 349.4906086494.

The spelling of 42688071 in words is "forty-two million, six hundred eighty-eight thousand, seventy-one".