144143785 has 16 divisors (see below), whose sum is σ = 185169600. Its totient is φ = 107390016.

The previous prime is 144143771. The next prime is 144143789. The reversal of 144143785 is 587341441.

It is a cyclic number.

It is not a de Polignac number, because 144143785 - 2²⁷ = 9926057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144143789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7254 + ... + 18463.

It is an arithmetic number, because the mean of its divisors is an integer number (11573100).

Almost surely, 2^144143785 is an apocalyptic number.

It is an amenable number.

144143785 is a deficient number, since it is larger than the sum of its proper divisors (41025815).

144143785 is a wasteful number, since it uses less digits than its factorization.

144143785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25800.

The product of its digits is 53760, while the sum is 37.

The square root of 144143785 is about 12005.9895468887. The cubic root of 144143785 is about 524.3226760412.

The spelling of 144143785 in words is "one hundred forty-four million, one hundred forty-three thousand, seven hundred eighty-five".