143881457 has 2 divisors, whose sum is σ = 143881458. Its totient is φ = 143881456.

The previous prime is 143881391. The next prime is 143881487. The reversal of 143881457 is 754188341.

143881457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93528241 + 50353216 = 9671^2 + 7096^2 .

It is a cyclic number.

It is not a de Polignac number, because 143881457 - 2⁸ = 143881201 is a prime.

It is not a weakly prime, because it can be changed into another prime (143881487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71940728 + 71940729.

It is an arithmetic number, because the mean of its divisors is an integer number (71940729).

Almost surely, 2^143881457 is an apocalyptic number.

It is an amenable number.

143881457 is a deficient number, since it is larger than the sum of its proper divisors (1).

143881457 is an equidigital number, since it uses as much as digits as its factorization.

143881457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 41.

The square root of 143881457 is about 11995.0596913896. The cubic root of 143881457 is about 524.0044103993.

The spelling of 143881457 in words is "one hundred forty-three million, eight hundred eighty-one thousand, four hundred fifty-seven".