42293117 has 2 divisors, whose sum is σ = 42293118. Its totient is φ = 42293116.

The previous prime is 42293101. The next prime is 42293129. The reversal of 42293117 is 71139224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40819321 + 1473796 = 6389^2 + 1214^2 .

It is a cyclic number.

It is not a de Polignac number, because 42293117 - 2⁴ = 42293101 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42293117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42293177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21146558 + 21146559.

It is an arithmetic number, because the mean of its divisors is an integer number (21146559).

Almost surely, 2^42293117 is an apocalyptic number.

It is an amenable number.

42293117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42293117 is an equidigital number, since it uses as much as digits as its factorization.

42293117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 42293117 is about 6503.3158465509. The cubic root of 42293117 is about 348.4094275023.

It can be divided in two parts, 422 and 93117, that added together give a palindrome (93539).

The spelling of 42293117 in words is "forty-two million, two hundred ninety-three thousand, one hundred seventeen".