42740359 has 2 divisors, whose sum is σ = 42740360. Its totient is φ = 42740358.

The previous prime is 42740353. The next prime is 42740377. The reversal of 42740359 is 95304724.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42740359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42740353) 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, 21370179 + 21370180.

It is an arithmetic number, because the mean of its divisors is an integer number (21370180).

Almost surely, 2^42740359 is an apocalyptic number.

42740359 is a deficient number, since it is larger than the sum of its proper divisors (1).

42740359 is an equidigital number, since it uses as much as digits as its factorization.

42740359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 42740359 is about 6537.6111080424. The cubic root of 42740359 is about 349.6332457557.

The spelling of 42740359 in words is "forty-two million, seven hundred forty thousand, three hundred fifty-nine".