143322457 has 2 divisors, whose sum is σ = 143322458. Its totient is φ = 143322456.

The previous prime is 143322419. The next prime is 143322463. The reversal of 143322457 is 754223341.

It is a happy number.

143322457 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., 141824281 + 1498176 = 11909^2 + 1224^2 .

It is a cyclic number.

It is not a de Polignac number, because 143322457 - 2¹⁵ = 143289689 is a prime.

It is not a weakly prime, because it can be changed into another prime (143322857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71661228 + 71661229.

It is an arithmetic number, because the mean of its divisors is an integer number (71661229).

Almost surely, 2^143322457 is an apocalyptic number.

It is an amenable number.

143322457 is a deficient number, since it is larger than the sum of its proper divisors (1).

143322457 is an equidigital number, since it uses as much as digits as its factorization.

143322457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 31.

The square root of 143322457 is about 11971.7357555202. The cubic root of 143322457 is about 523.3249190185.

Adding to 143322457 its reverse (754223341), we get a palindrome (897545798).

The spelling of 143322457 in words is "one hundred forty-three million, three hundred twenty-two thousand, four hundred fifty-seven".