142181024009 has 2 divisors, whose sum is σ = 142181024010. Its totient is φ = 142181024008.

The previous prime is 142181024003. The next prime is 142181024021. The reversal of 142181024009 is 900420181241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75200995984 + 66980028025 = 274228^2 + 258805^2 .

It is a cyclic number.

It is not a de Polignac number, because 142181024009 - 2⁸ = 142181023753 is a prime.

It is not a weakly prime, because it can be changed into another prime (142181024003) 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, 71090512004 + 71090512005.

It is an arithmetic number, because the mean of its divisors is an integer number (71090512005).

Almost surely, 2^142181024009 is an apocalyptic number.

It is an amenable number.

142181024009 is a deficient number, since it is larger than the sum of its proper divisors (1).

142181024009 is an equidigital number, since it uses as much as digits as its factorization.

142181024009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 142181024009 in words is "one hundred forty-two billion, one hundred eighty-one million, twenty-four thousand, nine".