142002247 has 2 divisors, whose sum is σ = 142002248. Its totient is φ = 142002246.

The previous prime is 142002199. The next prime is 142002251. The reversal of 142002247 is 742200241.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (742200241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142002247 - 2¹⁵ = 141969479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142002947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71001123 + 71001124.

It is an arithmetic number, because the mean of its divisors is an integer number (71001124).

Almost surely, 2^142002247 is an apocalyptic number.

142002247 is a deficient number, since it is larger than the sum of its proper divisors (1).

142002247 is an equidigital number, since it uses as much as digits as its factorization.

142002247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 142002247 is about 11916.4695694656. The cubic root of 142002247 is about 521.7130964515.

Adding to 142002247 its reverse (742200241), we get a palindrome (884202488).

The spelling of 142002247 in words is "one hundred forty-two million, two thousand, two hundred forty-seven".