142241797 has 2 divisors, whose sum is σ = 142241798. Its totient is φ = 142241796.

The previous prime is 142241783. The next prime is 142241819. The reversal of 142241797 is 797142241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142229476 + 12321 = 11926^2 + 111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142241797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142241717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71120898 + 71120899.

It is an arithmetic number, because the mean of its divisors is an integer number (71120899).

Almost surely, 2^142241797 is an apocalyptic number.

It is an amenable number.

142241797 is a deficient number, since it is larger than the sum of its proper divisors (1).

142241797 is an equidigital number, since it uses as much as digits as its factorization.

142241797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 142241797 is about 11926.5165492695. The cubic root of 142241797 is about 522.0062987648.

The spelling of 142241797 in words is "one hundred forty-two million, two hundred forty-one thousand, seven hundred ninety-seven".