42107617 has 4 divisors (see below), whose sum is σ = 42121620. Its totient is φ = 42093616.

The previous prime is 42107609. The next prime is 42107647. The reversal of 42107617 is 71670124.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 35533521 + 6574096 = 5961^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 42107617 - 2³ = 42107609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42107647) 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, 442 + ... + 9187.

It is an arithmetic number, because the mean of its divisors is an integer number (10530405).

Almost surely, 2^42107617 is an apocalyptic number.

It is an amenable number.

42107617 is a deficient number, since it is larger than the sum of its proper divisors (14003).

42107617 is an equidigital number, since it uses as much as digits as its factorization.

42107617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14002.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 42107617 is about 6489.0382184111. The cubic root of 42107617 is about 347.8992998148.

It can be divided in two parts, 42107 and 617, that added together give a palindrome (42724).

The spelling of 42107617 in words is "forty-two million, one hundred seven thousand, six hundred seventeen".