42424117 has 2 divisors, whose sum is σ = 42424118. Its totient is φ = 42424116.

The previous prime is 42424111. The next prime is 42424139. The reversal of 42424117 is 71142424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38266596 + 4157521 = 6186^2 + 2039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42424117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42424091 and 42424100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42424111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21212058 + 21212059.

It is an arithmetic number, because the mean of its divisors is an integer number (21212059).

Almost surely, 2^42424117 is an apocalyptic number.

It is an amenable number.

42424117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42424117 is an equidigital number, since it uses as much as digits as its factorization.

42424117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792, while the sum is 25.

The square root of 42424117 is about 6513.3798445968. The cubic root of 42424117 is about 348.7687814211.

The spelling of 42424117 in words is "forty-two million, four hundred twenty-four thousand, one hundred seventeen".