143402111 has 4 divisors (see below), whose sum is σ = 143891832. Its totient is φ = 142912392.

The previous prime is 143402087. The next prime is 143402117. The reversal of 143402111 is 111204341.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143402111 - 2¹⁴ = 143385727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143402111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143402117) by changing a digit.

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, 244421 + ... + 245006.

It is an arithmetic number, because the mean of its divisors is an integer number (35972958).

Almost surely, 2^143402111 is an apocalyptic number.

143402111 is a deficient number, since it is larger than the sum of its proper divisors (489721).

143402111 is an equidigital number, since it uses as much as digits as its factorization.

143402111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489720.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 143402111 is about 11975.0620457683. The cubic root of 143402111 is about 523.4218501019.

Adding to 143402111 its reverse (111204341), we get a palindrome (254606452).

The spelling of 143402111 in words is "one hundred forty-three million, four hundred two thousand, one hundred eleven".