42040259 has 2 divisors, whose sum is σ = 42040260. Its totient is φ = 42040258.

The previous prime is 42040253. The next prime is 42040277. The reversal of 42040259 is 95204024.

42040259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42040259 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42040253) 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, 21020129 + 21020130.

It is an arithmetic number, because the mean of its divisors is an integer number (21020130).

Almost surely, 2^42040259 is an apocalyptic number.

42040259 is a deficient number, since it is larger than the sum of its proper divisors (1).

42040259 is an equidigital number, since it uses as much as digits as its factorization.

42040259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 42040259 is about 6483.8460037234. The cubic root of 42040259 is about 347.7136935894.

The spelling of 42040259 in words is "forty-two million, forty thousand, two hundred fifty-nine".