143456769 has 12 divisors (see below), whose sum is σ = 208006656. Its totient is φ = 95272632.

The previous prime is 143456741. The next prime is 143456813. The reversal of 143456769 is 967654341.

It is not a de Polignac number, because 143456769 - 2⁷ = 143456641 is a prime.

It is a super-2 number, since 2×143456769² = 41159689143838722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (143456869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27937 + ... + 32670.

It is an arithmetic number, because the mean of its divisors is an integer number (17333888).

Almost surely, 2^143456769 is an apocalyptic number.

It is an amenable number.

143456769 is a deficient number, since it is larger than the sum of its proper divisors (64549887).

143456769 is a wasteful number, since it uses less digits than its factorization.

143456769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60876 (or 60873 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 143456769 is about 11977.3439877128. The cubic root of 143456769 is about 523.4883427480.

The spelling of 143456769 in words is "one hundred forty-three million, four hundred fifty-six thousand, seven hundred sixty-nine".