142122221243 has 2 divisors, whose sum is σ = 142122221244. Its totient is φ = 142122221242.

The previous prime is 142122221231. The next prime is 142122221249. The reversal of 142122221243 is 342122221241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142122221243 - 2⁸ = 142122220987 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (142122221249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71061110621 + 71061110622.

It is an arithmetic number, because the mean of its divisors is an integer number (71061110622).

Almost surely, 2^142122221243 is an apocalyptic number.

142122221243 is a deficient number, since it is larger than the sum of its proper divisors (1).

142122221243 is an equidigital number, since it uses as much as digits as its factorization.

142122221243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 26.

Adding to 142122221243 its reverse (342122221241), we get a palindrome (484244442484).

The spelling of 142122221243 in words is "one hundred forty-two billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred forty-three".