42788107 has 4 divisors (see below), whose sum is σ = 42831360. Its totient is φ = 42744856.

The previous prime is 42788101. The next prime is 42788111. The reversal of 42788107 is 70188724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42788107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42788101) 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, 20107 + ... + 22132.

It is an arithmetic number, because the mean of its divisors is an integer number (10707840).

Almost surely, 2^42788107 is an apocalyptic number.

42788107 is a deficient number, since it is larger than the sum of its proper divisors (43253).

42788107 is a wasteful number, since it uses less digits than its factorization.

42788107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43252.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 42788107 is about 6541.2618813192. The cubic root of 42788107 is about 349.7633965524.

The spelling of 42788107 in words is "forty-two million, seven hundred eighty-eight thousand, one hundred seven".