143151121 has 4 divisors (see below), whose sum is σ = 143241700. Its totient is φ = 143060544.

The previous prime is 143151119. The next prime is 143151161. The reversal of 143151121 is 121151341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124010496 + 19140625 = 11136^2 + 4375^2 .

It is a cyclic number.

It is not a de Polignac number, because 143151121 - 2¹ = 143151119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143151161) 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, 42876 + ... + 46093.

It is an arithmetic number, because the mean of its divisors is an integer number (35810425).

Almost surely, 2^143151121 is an apocalyptic number.

It is an amenable number.

143151121 is a deficient number, since it is larger than the sum of its proper divisors (90579).

143151121 is an equidigital number, since it uses as much as digits as its factorization.

143151121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90578.

The product of its digits is 120, while the sum is 19.

The square root of 143151121 is about 11964.5777610411. The cubic root of 143151121 is about 523.1162981832.

The spelling of 143151121 in words is "one hundred forty-three million, one hundred fifty-one thousand, one hundred twenty-one".