42799117 has 2 divisors, whose sum is σ = 42799118. Its totient is φ = 42799116.

The previous prime is 42799111. The next prime is 42799123. The reversal of 42799117 is 71199724.

It is a balanced prime because it is at equal distance from previous prime (42799111) and next prime (42799123).

It can be written as a sum of positive squares in only one way, i.e., 36554116 + 6245001 = 6046^2 + 2499^2 .

It is a cyclic number.

It is not a de Polignac number, because 42799117 - 2³ = 42799109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42799117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42799111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21399558 + 21399559.

It is an arithmetic number, because the mean of its divisors is an integer number (21399559).

Almost surely, 2^42799117 is an apocalyptic number.

It is an amenable number.

42799117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42799117 is an equidigital number, since it uses as much as digits as its factorization.

42799117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 40.

The square root of 42799117 is about 6542.1034079262. The cubic root of 42799117 is about 349.7933937098.

The spelling of 42799117 in words is "forty-two million, seven hundred ninety-nine thousand, one hundred seventeen".