142217244479 has 2 divisors, whose sum is σ = 142217244480. Its totient is φ = 142217244478.

The previous prime is 142217244467. The next prime is 142217244517. The reversal of 142217244479 is 974442712241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142217244479 - 2²⁴ = 142200467263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142217244079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71108622239 + 71108622240.

It is an arithmetic number, because the mean of its divisors is an integer number (71108622240).

Almost surely, 2^142217244479 is an apocalyptic number.

142217244479 is a deficient number, since it is larger than the sum of its proper divisors (1).

142217244479 is an equidigital number, since it uses as much as digits as its factorization.

142217244479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 47.

The spelling of 142217244479 in words is "one hundred forty-two billion, two hundred seventeen million, two hundred forty-four thousand, four hundred seventy-nine".