42600161 has 4 divisors (see below), whose sum is σ = 42634500. Its totient is φ = 42565824.

The previous prime is 42600157. The next prime is 42600179. The reversal of 42600161 is 16100624.

It is a happy number.

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 13104400 + 29495761 = 3620^2 + 5431^2 .

It is a cyclic number.

It is not a de Polignac number, because 42600161 - 2² = 42600157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42600191) 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, 15236 + ... + 17813.

It is an arithmetic number, because the mean of its divisors is an integer number (10658625).

Almost surely, 2^42600161 is an apocalyptic number.

It is an amenable number.

42600161 is a deficient number, since it is larger than the sum of its proper divisors (34339).

42600161 is a wasteful number, since it uses less digits than its factorization.

42600161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34338.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 42600161 is about 6526.8798824553. The cubic root of 42600161 is about 349.2505350705.

Adding to 42600161 its reverse (16100624), we get a palindrome (58700785).

The spelling of 42600161 in words is "forty-two million, six hundred thousand, one hundred sixty-one".