42688246 has 8 divisors (see below), whose sum is σ = 64988280. Its totient is φ = 21025488.

The previous prime is 42688237. The next prime is 42688249. The reversal of 42688246 is 64288624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×42688246³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42688199 and 42688208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42688249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159151 + ... + 159418.

It is an arithmetic number, because the mean of its divisors is an integer number (8123535).

Almost surely, 2^42688246 is an apocalyptic number.

42688246 is a deficient number, since it is larger than the sum of its proper divisors (22300034).

42688246 is a wasteful number, since it uses less digits than its factorization.

42688246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318638.

The product of its digits is 147456, while the sum is 40.

The square root of 42688246 is about 6533.6242622300. The cubic root of 42688246 is about 349.4910862283.

The spelling of 42688246 in words is "forty-two million, six hundred eighty-eight thousand, two hundred forty-six".