143972 has 6 divisors (see below), whose sum is σ = 251958. Its totient is φ = 71984.

The previous prime is 143971. The next prime is 143977. The reversal of 143972 is 279341.

It can be written as a sum of positive squares in only one way, i.e., 139876 + 4096 = 374^2 + 64^2 .

It is not an unprimeable number, because it can be changed into a prime (143971) by changing a digit.

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 as a sum of consecutive naturals, namely, 17993 + ... + 18000.

It is an arithmetic number, because the mean of its divisors is an integer number (41993).

2¹⁴³⁹⁷² is an apocalyptic number.

It is an amenable number.

143972 is a deficient number, since it is larger than the sum of its proper divisors (107986).

143972 is a wasteful number, since it uses less digits than its factorization.

143972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35997 (or 35995 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 143972 is about 379.4364241872. The cubic root of 143972 is about 52.4114304066.

The spelling of 143972 in words is "one hundred forty-three thousand, nine hundred seventy-two".