42440753 has 2 divisors, whose sum is σ = 42440754. Its totient is φ = 42440752.

The previous prime is 42440743. The next prime is 42440759. The reversal of 42440753 is 35704424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27331984 + 15108769 = 5228^2 + 3887^2 .

It is a cyclic number.

It is not a de Polignac number, because 42440753 - 2¹⁰ = 42439729 is a prime.

It is a super-3 number, since 3×42440753³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42440759) 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, 21220376 + 21220377.

It is an arithmetic number, because the mean of its divisors is an integer number (21220377).

Almost surely, 2^42440753 is an apocalyptic number.

It is an amenable number.

42440753 is a deficient number, since it is larger than the sum of its proper divisors (1).

42440753 is an equidigital number, since it uses as much as digits as its factorization.

42440753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 42440753 is about 6514.6567829779. The cubic root of 42440753 is about 348.8143636639.

The spelling of 42440753 in words is "forty-two million, four hundred forty thousand, seven hundred fifty-three".