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142241717 is a prime number
BaseRepresentation
bin10000111101001…
…10111110110101
3100220122121221202
420132212332311
5242403213332
622040422245
73345014612
oct1036467665
9326577852
10142241717
1173323342
123b777985
13236137c7
1414c69509
15c74aa62
hex87a6fb5

142241717 has 2 divisors, whose sum is σ = 142241718. Its totient is φ = 142241716.

The previous prime is 142241699. The next prime is 142241753. The reversal of 142241717 is 717142241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135512881 + 6728836 = 11641^2 + 2594^2 .

It is a cyclic number.

It is not a de Polignac number, because 142241717 - 214 = 142225333 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142241717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142241797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71120858 + 71120859.

It is an arithmetic number, because the mean of its divisors is an integer number (71120859).

Almost surely, 2142241717 is an apocalyptic number.

It is an amenable number.

142241717 is a deficient number, since it is larger than the sum of its proper divisors (1).

142241717 is an equidigital number, since it uses as much as digits as its factorization.

142241717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3136, while the sum is 29.

The square root of 142241717 is about 11926.5131953979. The cubic root of 142241717 is about 522.0062009021.

Adding to 142241717 its reverse (717142241), we get a palindrome (859383958).

The spelling of 142241717 in words is "one hundred forty-two million, two hundred forty-one thousand, seven hundred seventeen".