40129259 has 2 divisors, whose sum is σ = 40129260. Its totient is φ = 40129258.

The previous prime is 40129249. The next prime is 40129261. The reversal of 40129259 is 95292104.

40129259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40129259 - 2²⁰ = 39080683 is a prime.

It is a super-2 number, since 2×40129259² = 3220714855778162, which contains 22 as substring.

Together with 40129261, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40129249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20064629 + 20064630.

It is an arithmetic number, because the mean of its divisors is an integer number (20064630).

Almost surely, 2^40129259 is an apocalyptic number.

40129259 is a deficient number, since it is larger than the sum of its proper divisors (1).

40129259 is an equidigital number, since it uses as much as digits as its factorization.

40129259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 40129259 is about 6334.7658993841. The cubic root of 40129259 is about 342.3631762075.

The spelling of 40129259 in words is "forty million, one hundred twenty-nine thousand, two hundred fifty-nine".