143994242 has 24 divisors (see below), whose sum is σ = 251709264. Its totient is φ = 61600392.

The previous prime is 143994241. The next prime is 143994271. The reversal of 143994242 is 242499341.

It is a junction number, because it is equal to n+sod(n) for n = 143994196 and 143994205.

It is not an unprimeable number, because it can be changed into a prime (143994241) 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, 76193 + ... + 78059.

It is an arithmetic number, because the mean of its divisors is an integer number (10487886).

Almost surely, 2^143994242 is an apocalyptic number.

143994242 is a deficient number, since it is larger than the sum of its proper divisors (107715022).

143994242 is a wasteful number, since it uses less digits than its factorization.

143994242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670 (or 2663 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 143994242 is about 11999.7600809350. The cubic root of 143994242 is about 524.1412925316.

The spelling of 143994242 in words is "one hundred forty-three million, nine hundred ninety-four thousand, two hundred forty-two".