142005134431 has 2 divisors, whose sum is σ = 142005134432. Its totient is φ = 142005134430.

The previous prime is 142005134407. The next prime is 142005134437. The reversal of 142005134431 is 134431500241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142005134431 - 2⁵ = 142005134399 is a prime.

It is a super-2 number, since 2×142005134431² (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 142005134431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142005134437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71002567215 + 71002567216.

It is an arithmetic number, because the mean of its divisors is an integer number (71002567216).

Almost surely, 2^142005134431 is an apocalyptic number.

142005134431 is a deficient number, since it is larger than the sum of its proper divisors (1).

142005134431 is an equidigital number, since it uses as much as digits as its factorization.

142005134431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 142005134431 its reverse (134431500241), we get a palindrome (276436634672).

The spelling of 142005134431 in words is "one hundred forty-two billion, five million, one hundred thirty-four thousand, four hundred thirty-one".