144285729 has 16 divisors (see below), whose sum is σ = 220080000. Its totient is φ = 82368000.

The previous prime is 144285719. The next prime is 144285731. The reversal of 144285729 is 927582441.

It is not a de Polignac number, because 144285729 - 2⁵ = 144285697 is a prime.

It is a super-2 number, since 2×144285729² = 41636743186122882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144285719) 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, 23479 + ... + 28979.

It is an arithmetic number, because the mean of its divisors is an integer number (13755000).

Almost surely, 2^144285729 is an apocalyptic number.

It is an amenable number.

144285729 is a deficient number, since it is larger than the sum of its proper divisors (75794271).

144285729 is a wasteful number, since it uses less digits than its factorization.

144285729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760.

The product of its digits is 161280, while the sum is 42.

The square root of 144285729 is about 12011.8994751038. The cubic root of 144285729 is about 524.4947265663.

The spelling of 144285729 in words is "one hundred forty-four million, two hundred eighty-five thousand, seven hundred twenty-nine".