142102241 has 2 divisors, whose sum is σ = 142102242. Its totient is φ = 142102240.

The previous prime is 142102231. The next prime is 142102271. The reversal of 142102241 is 142201241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91393600 + 50708641 = 9560^2 + 7121^2 .

It is a cyclic number.

It is not a de Polignac number, because 142102241 - 2²² = 137907937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (142102231) 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, 71051120 + 71051121.

It is an arithmetic number, because the mean of its divisors is an integer number (71051121).

Almost surely, 2^142102241 is an apocalyptic number.

It is an amenable number.

142102241 is a deficient number, since it is larger than the sum of its proper divisors (1).

142102241 is an equidigital number, since it uses as much as digits as its factorization.

142102241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 142102241 is about 11920.6644529573. The cubic root of 142102241 is about 521.8355262959.

Adding to 142102241 its reverse (142201241), we get a palindrome (284303482).

The spelling of 142102241 in words is "one hundred forty-two million, one hundred two thousand, two hundred forty-one".