42717123 has 12 divisors (see below), whose sum is σ = 62624328. Its totient is φ = 28052640.

The previous prime is 42717119. The next prime is 42717131. The reversal of 42717123 is 32171724.

It is a happy number.

It is not a de Polignac number, because 42717123 - 2² = 42717119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42717113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34818 + ... + 36023.

It is an arithmetic number, because the mean of its divisors is an integer number (5218694).

Almost surely, 2^42717123 is an apocalyptic number.

42717123 is a deficient number, since it is larger than the sum of its proper divisors (19907205).

42717123 is a wasteful number, since it uses less digits than its factorization.

42717123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70914 (or 70911 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 42717123 is about 6535.8337647159. The cubic root of 42717123 is about 349.5698743431.

Adding to 42717123 its reverse (32171724), we get a palindrome (74888847).

The spelling of 42717123 in words is "forty-two million, seven hundred seventeen thousand, one hundred twenty-three".