143402823 has 12 divisors (see below), whose sum is σ = 218039640. Its totient is φ = 90570096.

The previous prime is 143402741. The next prime is 143402827. The reversal of 143402823 is 328204341.

It is not a de Polignac number, because 143402823 - 2¹² = 143398727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143402827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 419136 + ... + 419477.

It is an arithmetic number, because the mean of its divisors is an integer number (18169970).

Almost surely, 2^143402823 is an apocalyptic number.

143402823 is a deficient number, since it is larger than the sum of its proper divisors (74636817).

143402823 is a wasteful number, since it uses less digits than its factorization.

143402823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838638 (or 838635 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 143402823 is about 11975.0917741786. The cubic root of 143402823 is about 523.4227163740.

The spelling of 143402823 in words is "one hundred forty-three million, four hundred two thousand, eight hundred twenty-three".