144142689 has 16 divisors (see below), whose sum is σ = 195123200. Its totient is φ = 94635216.

The previous prime is 144142681. The next prime is 144142699. The reversal of 144142689 is 986241441.

It is not a de Polignac number, because 144142689 - 2³ = 144142681 is a prime.

It is a super-2 number, since 2×144142689² = 41554229584301442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144142681) 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 15 ways as a sum of consecutive naturals, for example, 174732 + ... + 175554.

It is an arithmetic number, because the mean of its divisors is an integer number (12195200).

Almost surely, 2^144142689 is an apocalyptic number.

It is an amenable number.

144142689 is a deficient number, since it is larger than the sum of its proper divisors (50980511).

144142689 is an equidigital number, since it uses as much as digits as its factorization.

144142689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644.

The product of its digits is 55296, while the sum is 39.

The square root of 144142689 is about 12005.9439029174. The cubic root of 144142689 is about 524.3213471387.

The spelling of 144142689 in words is "one hundred forty-four million, one hundred forty-two thousand, six hundred eighty-nine".