143187972 has 48 divisors (see below), whose sum is σ = 353590272. Its totient is φ = 45004960.

The previous prime is 143187943. The next prime is 143188013. The reversal of 143187972 is 279781341.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15943 + ... + 23249.

It is an arithmetic number, because the mean of its divisors is an integer number (7366464).

Almost surely, 2^143187972 is an apocalyptic number.

143187972 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 143187972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176795136).

143187972 is an abundant number, since it is smaller than the sum of its proper divisors (210402300).

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

143187972 is a wasteful number, since it uses less digits than its factorization.

143187972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408 (or 7406 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 143187972 is about 11966.1176661439. The cubic root of 143187972 is about 523.1611824627.

The spelling of 143187972 in words is "one hundred forty-three million, one hundred eighty-seven thousand, nine hundred seventy-two".