143721089 has 4 divisors (see below), whose sum is σ = 149969856. Its totient is φ = 137472324.

The previous prime is 143721049. The next prime is 143721091. The reversal of 143721089 is 980127341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 980127341 = 31 ⋅31617011.

It is a cyclic number.

It is not a de Polignac number, because 143721089 - 2⁸ = 143720833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143721029) 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 in 3 ways as a sum of consecutive naturals, for example, 3124349 + ... + 3124394.

It is an arithmetic number, because the mean of its divisors is an integer number (37492464).

Almost surely, 2^143721089 is an apocalyptic number.

It is an amenable number.

143721089 is a deficient number, since it is larger than the sum of its proper divisors (6248767).

143721089 is an equidigital number, since it uses as much as digits as its factorization.

143721089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248766.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 143721089 is about 11988.3730756096. The cubic root of 143721089 is about 523.8096556774.

The spelling of 143721089 in words is "one hundred forty-three million, seven hundred twenty-one thousand, eighty-nine".