42044555249 has 2 divisors, whose sum is σ = 42044555250. Its totient is φ = 42044555248.

The previous prime is 42044555233. The next prime is 42044555257. The reversal of 42044555249 is 94255544024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40056019600 + 1988535649 = 200140^2 + 44593^2 .

It is a cyclic number.

It is not a de Polignac number, because 42044555249 - 2⁴ = 42044555233 is a prime.

It is not a weakly prime, because it can be changed into another prime (42044555269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21022277624 + 21022277625.

It is an arithmetic number, because the mean of its divisors is an integer number (21022277625).

Almost surely, 2^42044555249 is an apocalyptic number.

It is an amenable number.

42044555249 is a deficient number, since it is larger than the sum of its proper divisors (1).

42044555249 is an equidigital number, since it uses as much as digits as its factorization.

42044555249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152000, while the sum is 44.

The spelling of 42044555249 in words is "forty-two billion, forty-four million, five hundred fifty-five thousand, two hundred forty-nine".