142028617 has 2 divisors, whose sum is σ = 142028618. Its totient is φ = 142028616.

The previous prime is 142028599. The next prime is 142028647. The reversal of 142028617 is 716820241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111070521 + 30958096 = 10539^2 + 5564^2 .

It is an emirp because it is prime and its reverse (716820241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142028617 is a prime.

It is a super-3 number, since 3×142028617³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142028647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71014308 + 71014309.

It is an arithmetic number, because the mean of its divisors is an integer number (71014309).

Almost surely, 2^142028617 is an apocalyptic number.

It is an amenable number.

142028617 is a deficient number, since it is larger than the sum of its proper divisors (1).

142028617 is an equidigital number, since it uses as much as digits as its factorization.

142028617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 142028617 is about 11917.5759699697. The cubic root of 142028617 is about 521.7453887171.

Adding to 142028617 its reverse (716820241), we get a palindrome (858848858).

The spelling of 142028617 in words is "one hundred forty-two million, twenty-eight thousand, six hundred seventeen".