42740353 has 2 divisors, whose sum is σ = 42740354. Its totient is φ = 42740352.

The previous prime is 42740339. The next prime is 42740359. The reversal of 42740353 is 35304724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27279729 + 15460624 = 5223^2 + 3932^2 .

It is a cyclic number.

It is not a de Polignac number, because 42740353 - 2⁹ = 42739841 is a prime.

It is not a weakly prime, because it can be changed into another prime (42740359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21370176 + 21370177.

It is an arithmetic number, because the mean of its divisors is an integer number (21370177).

Almost surely, 2^42740353 is an apocalyptic number.

It is an amenable number.

42740353 is a deficient number, since it is larger than the sum of its proper divisors (1).

42740353 is an equidigital number, since it uses as much as digits as its factorization.

42740353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 42740353 is about 6537.6106491592. The cubic root of 42740353 is about 349.6332293949.

The spelling of 42740353 in words is "forty-two million, seven hundred forty thousand, three hundred fifty-three".