142193851469 has 2 divisors, whose sum is σ = 142193851470. Its totient is φ = 142193851468.

The previous prime is 142193851381. The next prime is 142193851507. The reversal of 142193851469 is 964158391241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108507654025 + 33686197444 = 329405^2 + 183538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142193851469 is a prime.

It is a super-2 number, since 2×142193851469² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142193851469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142193851369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71096925734 + 71096925735.

It is an arithmetic number, because the mean of its divisors is an integer number (71096925735).

Almost surely, 2^142193851469 is an apocalyptic number.

It is an amenable number.

142193851469 is a deficient number, since it is larger than the sum of its proper divisors (1).

142193851469 is an equidigital number, since it uses as much as digits as its factorization.

142193851469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 53.

The spelling of 142193851469 in words is "one hundred forty-two billion, one hundred ninety-three million, eight hundred fifty-one thousand, four hundred sixty-nine".