42611123 has 4 divisors (see below), whose sum is σ = 43309728. Its totient is φ = 41912520.

The previous prime is 42611089. The next prime is 42611131. The reversal of 42611123 is 32111624.

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-42611123 is a prime.

It is a super-2 number, since 2×42611123² = 3631415606642258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42611095 and 42611104.

It is not an unprimeable number, because it can be changed into a prime (42611923) 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, 349211 + ... + 349332.

It is an arithmetic number, because the mean of its divisors is an integer number (10827432).

Almost surely, 2^42611123 is an apocalyptic number.

42611123 is a deficient number, since it is larger than the sum of its proper divisors (698605).

42611123 is an equidigital number, since it uses as much as digits as its factorization.

42611123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698604.

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

The square root of 42611123 is about 6527.7195865019. The cubic root of 42611123 is about 349.2804892298.

Adding to 42611123 its reverse (32111624), we get a palindrome (74722747).

The spelling of 42611123 in words is "forty-two million, six hundred eleven thousand, one hundred twenty-three".