143220404 has 12 divisors (see below), whose sum is σ = 263827200. Its totient is φ = 67841208.

The previous prime is 143220397. The next prime is 143220431. The reversal of 143220404 is 404022341.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 942164 + ... + 942315.

It is an arithmetic number, because the mean of its divisors is an integer number (21985600).

Almost surely, 2^143220404 is an apocalyptic number.

It is an amenable number.

143220404 is a deficient number, since it is larger than the sum of its proper divisors (120606796).

143220404 is a wasteful number, since it uses less digits than its factorization.

143220404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884502 (or 1884500 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 143220404 is about 11967.4727490812. The cubic root of 143220404 is about 523.2006780581.

Adding to 143220404 its reverse (404022341), we get a palindrome (547242745).

The spelling of 143220404 in words is "one hundred forty-three million, two hundred twenty thousand, four hundred four".