143503920 has 160 divisors (see below), whose sum is σ = 564963840. Its totient is φ = 32797440.

The previous prime is 143503891. The next prime is 143503957. The reversal of 143503920 is 29305341.

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 (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10375 + ... + 19865.

It is an arithmetic number, because the mean of its divisors is an integer number (3531024).

Almost surely, 2^143503920 is an apocalyptic number.

143503920 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 143503920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282481920).

143503920 is an abundant number, since it is smaller than the sum of its proper divisors (421459920).

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

143503920 is a wasteful number, since it uses less digits than its factorization.

143503920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9520 (or 9508 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 143503920 is about 11979.3121672323. The cubic root of 143503920 is about 523.5456893974.

The spelling of 143503920 in words is "one hundred forty-three million, five hundred three thousand, nine hundred twenty".