42800117 has 4 divisors (see below), whose sum is σ = 42817740. Its totient is φ = 42782496.

The previous prime is 42800111. The next prime is 42800137. The reversal of 42800117 is 71100824.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34586161 + 8213956 = 5881^2 + 2866^2 .

It is a cyclic number.

It is not a de Polignac number, because 42800117 - 2⁶ = 42800053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42800092 and 42800101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42800111) 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, 4448 + ... + 10265.

It is an arithmetic number, because the mean of its divisors is an integer number (10704435).

Almost surely, 2^42800117 is an apocalyptic number.

It is an amenable number.

42800117 is a deficient number, since it is larger than the sum of its proper divisors (17623).

42800117 is a wasteful number, since it uses less digits than its factorization.

42800117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17622.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 42800117 is about 6542.1798354983. The cubic root of 42800117 is about 349.7961179924.

The spelling of 42800117 in words is "forty-two million, eight hundred thousand, one hundred seventeen".