42151117 has 2 divisors, whose sum is σ = 42151118. Its totient is φ = 42151116.

The previous prime is 42151097. The next prime is 42151121. The reversal of 42151117 is 71115124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31516996 + 10634121 = 5614^2 + 3261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42151117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42154117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21075558 + 21075559.

It is an arithmetic number, because the mean of its divisors is an integer number (21075559).

Almost surely, 2^42151117 is an apocalyptic number.

It is an amenable number.

42151117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42151117 is an equidigital number, since it uses as much as digits as its factorization.

42151117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 280, while the sum is 22.

The square root of 42151117 is about 6492.3891596238. The cubic root of 42151117 is about 348.0190597083.

The spelling of 42151117 in words is "forty-two million, one hundred fifty-one thousand, one hundred seventeen".