142563439 has 2 divisors, whose sum is σ = 142563440. Its totient is φ = 142563438.

The previous prime is 142563413. The next prime is 142563467. The reversal of 142563439 is 934365241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142563439 - 2¹⁹ = 142039151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142563398 and 142563407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142563409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71281719 + 71281720.

It is an arithmetic number, because the mean of its divisors is an integer number (71281720).

Almost surely, 2^142563439 is an apocalyptic number.

142563439 is a deficient number, since it is larger than the sum of its proper divisors (1).

142563439 is an equidigital number, since it uses as much as digits as its factorization.

142563439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 37.

The square root of 142563439 is about 11939.9932579545. The cubic root of 142563439 is about 522.3994620476.

The spelling of 142563439 in words is "one hundred forty-two million, five hundred sixty-three thousand, four hundred thirty-nine".