144137785 has 16 divisors (see below), whose sum is σ = 190428480. Its totient is φ = 103861440.

The previous prime is 144137783. The next prime is 144137789. The reversal of 144137785 is 587731441.

It is a happy number.

It is not a de Polignac number, because 144137785 - 2¹ = 144137783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144137783) 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, 6027 + ... + 18016.

It is an arithmetic number, because the mean of its divisors is an integer number (11901780).

Almost surely, 2^144137785 is an apocalyptic number.

It is an amenable number.

144137785 is a deficient number, since it is larger than the sum of its proper divisors (46290695).

144137785 is a wasteful number, since it uses less digits than its factorization.

144137785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24168.

The product of its digits is 94080, while the sum is 40.

The square root of 144137785 is about 12005.7396690083. The cubic root of 144137785 is about 524.3154009450.

The spelling of 144137785 in words is "one hundred forty-four million, one hundred thirty-seven thousand, seven hundred eighty-five".