143040442 has 16 divisors (see below), whose sum is σ = 217413000. Its totient is φ = 70574400.

The previous prime is 143040439. The next prime is 143040497. The reversal of 143040442 is 244040341.

It can be written as a sum of positive squares in 4 ways, for example, as 124300201 + 18740241 = 11149^2 + 4329^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69484 + ... + 71512.

Almost surely, 2^143040442 is an apocalyptic number.

143040442 is a deficient number, since it is larger than the sum of its proper divisors (74372558).

143040442 is a wasteful number, since it uses less digits than its factorization.

143040442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 143040442 is about 11959.9515885308. The cubic root of 143040442 is about 522.9814455504.

Adding to 143040442 its reverse (244040341), we get a palindrome (387080783).

The spelling of 143040442 in words is "one hundred forty-three million, forty thousand, four hundred forty-two".