142543361 has 2 divisors, whose sum is σ = 142543362. Its totient is φ = 142543360.

The previous prime is 142543309. The next prime is 142543399. The reversal of 142543361 is 163345241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109077136 + 33466225 = 10444^2 + 5785^2 .

It is a cyclic number.

It is not a de Polignac number, because 142543361 - 2¹⁴ = 142526977 is a prime.

It is not a weakly prime, because it can be changed into another prime (142593361) 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 as a sum of consecutive naturals, namely, 71271680 + 71271681.

It is an arithmetic number, because the mean of its divisors is an integer number (71271681).

Almost surely, 2^142543361 is an apocalyptic number.

It is an amenable number.

142543361 is a deficient number, since it is larger than the sum of its proper divisors (1).

142543361 is an equidigital number, since it uses as much as digits as its factorization.

142543361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 142543361 is about 11939.1524406048. The cubic root of 142543361 is about 522.3749367581.

The spelling of 142543361 in words is "one hundred forty-two million, five hundred forty-three thousand, three hundred sixty-one".