143138272 has 36 divisors (see below), whose sum is σ = 286915608. Its totient is φ = 70280000.

The previous prime is 143138263. The next prime is 143138273. The reversal of 143138272 is 272831341.

It is a super-3 number, since 3×143138272³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143138273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 570147 + ... + 570397.

It is an arithmetic number, because the mean of its divisors is an integer number (7969878).

Almost surely, 2^143138272 is an apocalyptic number.

It is an amenable number.

143138272 is an abundant number, since it is smaller than the sum of its proper divisors (143777336).

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

143138272 is an frugal number, since it uses more digits than its factorization.

143138272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 324 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 143138272 is about 11964.0407889642. The cubic root of 143138272 is about 523.1006463733.

The spelling of 143138272 in words is "one hundred forty-three million, one hundred thirty-eight thousand, two hundred seventy-two".