142221605653 has 2 divisors, whose sum is σ = 142221605654. Its totient is φ = 142221605652.

The previous prime is 142221605621. The next prime is 142221605759. The reversal of 142221605653 is 356506122241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134466689809 + 7754915844 = 366697^2 + 88062^2 .

It is an emirp because it is prime and its reverse (356506122241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142221605653 - 2⁵ = 142221605621 is a prime.

It is a super-2 number, since 2×142221605653² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142221603653) 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, 71110802826 + 71110802827.

It is an arithmetic number, because the mean of its divisors is an integer number (71110802827).

Almost surely, 2^142221605653 is an apocalyptic number.

It is an amenable number.

142221605653 is a deficient number, since it is larger than the sum of its proper divisors (1).

142221605653 is an equidigital number, since it uses as much as digits as its factorization.

142221605653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 142221605653 its reverse (356506122241), we get a palindrome (498727727894).

The spelling of 142221605653 in words is "one hundred forty-two billion, two hundred twenty-one million, six hundred five thousand, six hundred fifty-three".