143171442 has 32 divisors (see below), whose sum is σ = 321260160. Its totient is φ = 47258640.

The previous prime is 143171407. The next prime is 143171461. The reversal of 143171442 is 244171341.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7309 + ... + 18432.

It is an arithmetic number, because the mean of its divisors is an integer number (10039380).

Almost surely, 2^143171442 is an apocalyptic number.

143171442 is an abundant number, since it is smaller than the sum of its proper divisors (178088718).

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

143171442 is a wasteful number, since it uses less digits than its factorization.

143171442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25855 (or 25849 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 143171442 is about 11965.4269459974. The cubic root of 143171442 is about 523.1410499823.

The spelling of 143171442 in words is "one hundred forty-three million, one hundred seventy-one thousand, four hundred forty-two".