143342557 has 2 divisors, whose sum is σ = 143342558. Its totient is φ = 143342556.

The previous prime is 143342503. The next prime is 143342561. The reversal of 143342557 is 755243341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132227001 + 11115556 = 11499^2 + 3334^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143342557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143382557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71671278 + 71671279.

It is an arithmetic number, because the mean of its divisors is an integer number (71671279).

Almost surely, 2^143342557 is an apocalyptic number.

It is an amenable number.

143342557 is a deficient number, since it is larger than the sum of its proper divisors (1).

143342557 is an equidigital number, since it uses as much as digits as its factorization.

143342557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 34.

The square root of 143342557 is about 11972.5752033554. The cubic root of 143342557 is about 523.3493821287.

Adding to 143342557 its reverse (755243341), we get a palindrome (898585898).

The spelling of 143342557 in words is "one hundred forty-three million, three hundred forty-two thousand, five hundred fifty-seven".