40205029 has 2 divisors, whose sum is σ = 40205030. Its totient is φ = 40205028.

The previous prime is 40205003. The next prime is 40205041. The reversal of 40205029 is 92050204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39664804 + 540225 = 6298^2 + 735^2 .

It is a cyclic number.

It is not a de Polignac number, because 40205029 - 2²⁵ = 6650597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40205059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20102514 + 20102515.

It is an arithmetic number, because the mean of its divisors is an integer number (20102515).

Almost surely, 2^40205029 is an apocalyptic number.

It is an amenable number.

40205029 is a deficient number, since it is larger than the sum of its proper divisors (1).

40205029 is an equidigital number, since it uses as much as digits as its factorization.

40205029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 40205029 is about 6340.7435683838. The cubic root of 40205029 is about 342.5785182371.

The spelling of 40205029 in words is "forty million, two hundred five thousand, twenty-nine".