143173420 has 36 divisors (see below), whose sum is σ = 325578960. Its totient is φ = 52862784.

The previous prime is 143173403. The next prime is 143173447. The reversal of 143173420 is 24371341.

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 11 ways as a sum of consecutive naturals, for example, 17800 + ... + 24559.

It is an arithmetic number, because the mean of its divisors is an integer number (9043860).

Almost surely, 2^143173420 is an apocalyptic number.

143173420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143173420 is an abundant number, since it is smaller than the sum of its proper divisors (182405540).

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

143173420 is a wasteful number, since it uses less digits than its factorization.

143173420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42394 (or 42379 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 143173420 is about 11965.5096005143. The cubic root of 143173420 is about 523.1434591411.

The spelling of 143173420 in words is "one hundred forty-three million, one hundred seventy-three thousand, four hundred twenty".