40134217 has 2 divisors, whose sum is σ = 40134218. Its totient is φ = 40134216.

The previous prime is 40134209. The next prime is 40134221. The reversal of 40134217 is 71243104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21566736 + 18567481 = 4644^2 + 4309^2 .

It is a cyclic number.

It is not a de Polignac number, because 40134217 - 2³ = 40134209 is a prime.

It is a super-2 number, since 2×40134217² = 3221510748406178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40134277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20067108 + 20067109.

It is an arithmetic number, because the mean of its divisors is an integer number (20067109).

Almost surely, 2^40134217 is an apocalyptic number.

It is an amenable number.

40134217 is a deficient number, since it is larger than the sum of its proper divisors (1).

40134217 is an equidigital number, since it uses as much as digits as its factorization.

40134217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 40134217 is about 6335.1572198328. The cubic root of 40134217 is about 342.3772753692.

It can be divided in two parts, 40134 and 217, that multiplied together give a palindrome (8709078).

The spelling of 40134217 in words is "forty million, one hundred thirty-four thousand, two hundred seventeen".