142245433481 has 2 divisors, whose sum is σ = 142245433482. Its totient is φ = 142245433480.

The previous prime is 142245433423. The next prime is 142245433537. The reversal of 142245433481 is 184334542241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96063423481 + 46182010000 = 309941^2 + 214900^2 .

It is an emirp because it is prime and its reverse (184334542241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142245433481 - 2¹⁰ = 142245432457 is a prime.

It is a super-2 number, since 2×142245433481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142245433181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71122716740 + 71122716741.

It is an arithmetic number, because the mean of its divisors is an integer number (71122716741).

Almost surely, 2^142245433481 is an apocalyptic number.

It is an amenable number.

142245433481 is a deficient number, since it is larger than the sum of its proper divisors (1).

142245433481 is an equidigital number, since it uses as much as digits as its factorization.

142245433481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 368640, while the sum is 41.

The spelling of 142245433481 in words is "one hundred forty-two billion, two hundred forty-five million, four hundred thirty-three thousand, four hundred eighty-one".