142001047 has 2 divisors, whose sum is σ = 142001048. Its totient is φ = 142001046.

The previous prime is 142001033. The next prime is 142001059. The reversal of 142001047 is 740100241.

It is a strong prime.

It is an emirp because it is prime and its reverse (740100241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142001047 - 2¹¹ = 141998999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142001087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71000523 + 71000524.

It is an arithmetic number, because the mean of its divisors is an integer number (71000524).

Almost surely, 2^142001047 is an apocalyptic number.

142001047 is a deficient number, since it is larger than the sum of its proper divisors (1).

142001047 is an equidigital number, since it uses as much as digits as its factorization.

142001047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 142001047 is about 11916.4192188761. The cubic root of 142001047 is about 521.7116268562.

Adding to 142001047 its reverse (740100241), we get a palindrome (882101288).

The spelling of 142001047 in words is "one hundred forty-two million, one thousand, forty-seven".