143420225 has 24 divisors (see below), whose sum is σ = 198138360. Its totient is φ = 102251520.

The previous prime is 143420201. The next prime is 143420239. The reversal of 143420225 is 522024341.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 35509681 + 107910544 = 5959^2 + 10388^2 .

It is not a de Polignac number, because 143420225 - 2⁶ = 143420161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143420225.

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 23 ways as a sum of consecutive naturals, for example, 1817 + ... + 17033.

It is an arithmetic number, because the mean of its divisors is an integer number (8255765).

Almost surely, 2^143420225 is an apocalyptic number.

It is an amenable number.

143420225 is a deficient number, since it is larger than the sum of its proper divisors (54718135).

143420225 is a wasteful number, since it uses less digits than its factorization.

143420225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15269 (or 15264 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 143420225 is about 11975.8183436457. The cubic root of 143420225 is about 523.4438880486.

Adding to 143420225 its reverse (522024341), we get a palindrome (665444566).

The spelling of 143420225 in words is "one hundred forty-three million, four hundred twenty thousand, two hundred twenty-five".