40005243029 has 2 divisors, whose sum is σ = 40005243030. Its totient is φ = 40005243028.

The previous prime is 40005243011. The next prime is 40005243059. The reversal of 40005243029 is 92034250004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22883520529 + 17121722500 = 151273^2 + 130850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40005243029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40005242992 and 40005243010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40005243059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20002621514 + 20002621515.

It is an arithmetic number, because the mean of its divisors is an integer number (20002621515).

Almost surely, 2^40005243029 is an apocalyptic number.

It is an amenable number.

40005243029 is a deficient number, since it is larger than the sum of its proper divisors (1).

40005243029 is an equidigital number, since it uses as much as digits as its factorization.

40005243029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 40005243029 in words is "forty billion, five million, two hundred forty-three thousand, twenty-nine".