143020404 has 30 divisors (see below), whose sum is σ = 373884434. Its totient is φ = 47673360.

The previous prime is 143020399. The next prime is 143020433. The reversal of 143020404 is 404020341.

It can be written as a sum of positive squares in only one way, i.e., 128595600 + 14424804 = 11340^2 + 3798^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 220387 + ... + 221034.

Almost surely, 2^143020404 is an apocalyptic number.

It is an amenable number.

143020404 is an abundant number, since it is smaller than the sum of its proper divisors (230864030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143020404 is a wasteful number, since it uses less digits than its factorization.

143020404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441437 (or 441426 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 143020404 is about 11959.1138467698. The cubic root of 143020404 is about 522.9570235724.

Adding to 143020404 its reverse (404020341), we get a palindrome (547040745).

The spelling of 143020404 in words is "one hundred forty-three million, twenty thousand, four hundred four".