143197141 has 4 divisors (see below), whose sum is σ = 147067372. Its totient is φ = 139326912.

The previous prime is 143197127. The next prime is 143197147. The reversal of 143197141 is 141791341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141791341 = 197 ⋅719753.

It can be written as a sum of positive squares in 2 ways, for example, as 111218116 + 31979025 = 10546^2 + 5655^2 .

It is a cyclic number.

It is not a de Polignac number, because 143197141 - 2¹¹ = 143195093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143197147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1935060 + ... + 1935133.

It is an arithmetic number, because the mean of its divisors is an integer number (36766843).

Almost surely, 2^143197141 is an apocalyptic number.

It is an amenable number.

143197141 is a deficient number, since it is larger than the sum of its proper divisors (3870231).

143197141 is an equidigital number, since it uses as much as digits as its factorization.

143197141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3870230.

The product of its digits is 3024, while the sum is 31.

The square root of 143197141 is about 11966.5007834371. The cubic root of 143197141 is about 523.1723490489.

The spelling of 143197141 in words is "one hundred forty-three million, one hundred ninety-seven thousand, one hundred forty-one".