142012447 has 2 divisors, whose sum is σ = 142012448. Its totient is φ = 142012446.

The previous prime is 142012439. The next prime is 142012459. The reversal of 142012447 is 744210241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142012447 - 2³ = 142012439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142012417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71006223 + 71006224.

It is an arithmetic number, because the mean of its divisors is an integer number (71006224).

Almost surely, 2^142012447 is an apocalyptic number.

142012447 is a deficient number, since it is larger than the sum of its proper divisors (1).

142012447 is an equidigital number, since it uses as much as digits as its factorization.

142012447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 142012447 is about 11916.8975408871. The cubic root of 142012447 is about 521.7255876768.

Adding to 142012447 its reverse (744210241), we get a palindrome (886222688).

The spelling of 142012447 in words is "one hundred forty-two million, twelve thousand, four hundred forty-seven".