143043121 has 12 divisors (see below), whose sum is σ = 155231580. Its totient is φ = 131751360.

The previous prime is 143043119. The next prime is 143043139. The reversal of 143043121 is 121340341.

It can be written as a sum of positive squares in 6 ways, for example, as 13424896 + 129618225 = 3664^2 + 11385^2 .

It is not a de Polignac number, because 143043121 - 2¹ = 143043119 is a prime.

It is a super-2 number, since 2×143043121² = 40922668930841282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143043181) by changing a digit.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139591 + ... + 140611.

It is an arithmetic number, because the mean of its divisors is an integer number (12935965).

Almost surely, 2^143043121 is an apocalyptic number.

It is an amenable number.

143043121 is a deficient number, since it is larger than the sum of its proper divisors (12188459).

143043121 is a wasteful number, since it uses less digits than its factorization.

143043121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 143043121 is about 11960.0635867875. The cubic root of 143043121 is about 522.9847104978.

Adding to 143043121 its reverse (121340341), we get a palindrome (264383462).

It can be divided in two parts, 1430 and 43121, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 143043121 in words is "one hundred forty-three million, forty-three thousand, one hundred twenty-one".