1442945256169 has 8 divisors (see below), whose sum is σ = 1481982401288. Its totient is φ = 1403910144000.

The previous prime is 1442945256161. The next prime is 1442945256197. The reversal of 1442945256169 is 9616525492441.

It can be written as a sum of positive squares in 4 ways, for example, as 818141958144 + 624803298025 = 904512^2 + 790445^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1442945256169 - 2³ = 1442945256161 is a prime.

It is a super-3 number, since 3×1442945256169³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442945256161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989419 + ... + 1965919.

It is an arithmetic number, because the mean of its divisors is an integer number (185247800161).

Almost surely, 2^{1442945256169} is an apocalyptic number.

It is an amenable number.

1442945256169 is a deficient number, since it is larger than the sum of its proper divisors (39037145119).

1442945256169 is an equidigital number, since it uses as much as digits as its factorization.

1442945256169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016475.

The product of its digits is 18662400, while the sum is 58.

The spelling of 1442945256169 in words is "one trillion, four hundred forty-two billion, nine hundred forty-five million, two hundred fifty-six thousand, one hundred sixty-nine".