144242777 has 8 divisors (see below), whose sum is σ = 164921856. Its totient is φ = 123581952.

The previous prime is 144242771. The next prime is 144242801. The reversal of 144242777 is 777242441.

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 144242777 - 2²⁴ = 127465561 is a prime.

It is a super-3 number, since 3×144242777³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144242777.

It is not an unprimeable number, because it can be changed into a prime (144242771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26393 + ... + 31385.

It is an arithmetic number, because the mean of its divisors is an integer number (20615232).

Almost surely, 2^144242777 is an apocalyptic number.

It is an amenable number.

144242777 is a deficient number, since it is larger than the sum of its proper divisors (20679079).

144242777 is an equidigital number, since it uses as much as digits as its factorization.

144242777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9127.

The product of its digits is 87808, while the sum is 38.

The square root of 144242777 is about 12010.1114482756. Note that the first 3 decimals coincide. The cubic root of 144242777 is about 524.4426762967.

The spelling of 144242777 in words is "one hundred forty-four million, two hundred forty-two thousand, seven hundred seventy-seven".