40116281 has 2 divisors, whose sum is σ = 40116282. Its totient is φ = 40116280.

The previous prime is 40116269. The next prime is 40116287. The reversal of 40116281 is 18261104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23232400 + 16883881 = 4820^2 + 4109^2 .

It is a cyclic number.

It is not a de Polignac number, because 40116281 - 2⁶ = 40116217 is a prime.

It is a super-2 number, since 2×40116281² = 3218632002541922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40116287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20058140 + 20058141.

It is an arithmetic number, because the mean of its divisors is an integer number (20058141).

Almost surely, 2^40116281 is an apocalyptic number.

It is an amenable number.

40116281 is a deficient number, since it is larger than the sum of its proper divisors (1).

40116281 is an equidigital number, since it uses as much as digits as its factorization.

40116281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 40116281 is about 6333.7414693055. The cubic root of 40116281 is about 342.3262649157.

Adding to 40116281 its reverse (18261104), we get a palindrome (58377385).

The spelling of 40116281 in words is "forty million, one hundred sixteen thousand, two hundred eighty-one".