143271920 has 160 divisors (see below), whose sum is σ = 393564096. Its totient is φ = 47923200.

The previous prime is 143271907. The next prime is 143271923. The reversal of 143271920 is 29172341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143271923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 912482 + ... + 912638.

Almost surely, 2^143271920 is an apocalyptic number.

143271920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143271920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196782048).

143271920 is an abundant number, since it is smaller than the sum of its proper divisors (250292176).

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

143271920 is a wasteful number, since it uses less digits than its factorization.

143271920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 143271920 is about 11969.6248896947. The cubic root of 143271920 is about 523.2634018376.

The spelling of 143271920 in words is "one hundred forty-three million, two hundred seventy-one thousand, nine hundred twenty".