143540222 has 16 divisors (see below), whose sum is σ = 246710880. Its totient is φ = 61356768.

The previous prime is 143540219. The next prime is 143540239. The reversal of 143540222 is 222045341.

It is a happy number.

It is a congruent number.

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, 7733 + ... + 18624.

It is an arithmetic number, because the mean of its divisors is an integer number (15419430).

Almost surely, 2^143540222 is an apocalyptic number.

143540222 is a deficient number, since it is larger than the sum of its proper divisors (103170658).

143540222 is a wasteful number, since it uses less digits than its factorization.

143540222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26755.

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

The square root of 143540222 is about 11980.8272669294. The cubic root of 143540222 is about 523.5898325660.

Adding to 143540222 its reverse (222045341), we get a palindrome (365585563).

The spelling of 143540222 in words is "one hundred forty-three million, five hundred forty thousand, two hundred twenty-two".