143321472 has 144 divisors (see below), whose sum is σ = 479945700. Its totient is φ = 40932864.

The previous prime is 143321429. The next prime is 143321473. The reversal of 143321472 is 274123341.

It is a happy number.

143321472 is nontrivially palindromic in base 5.

It is a tau number, because it is divible by the number of its divisors (144).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143321473) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 55179 + ... + 57717.

Almost surely, 2^143321472 is an apocalyptic number.

143321472 is a gapful number since it is divisible by the number (12) 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 143321472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239972850).

143321472 is an abundant number, since it is smaller than the sum of its proper divisors (336624228).

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

143321472 is a wasteful number, since it uses less digits than its factorization.

143321472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2551 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 143321472 is about 11971.6946168870. The cubic root of 143321472 is about 523.3237201456.

The spelling of 143321472 in words is "one hundred forty-three million, three hundred twenty-one thousand, four hundred seventy-two".