142545031493 has 2 divisors, whose sum is σ = 142545031494. Its totient is φ = 142545031492.

The previous prime is 142545031487. The next prime is 142545031507. The reversal of 142545031493 is 394130545241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141762039169 + 782992324 = 376513^2 + 27982^2 .

It is a cyclic number.

It is not a de Polignac number, because 142545031493 - 2²⁸ = 142276596037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142545031493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142545036493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71272515746 + 71272515747.

It is an arithmetic number, because the mean of its divisors is an integer number (71272515747).

Almost surely, 2^142545031493 is an apocalyptic number.

It is an amenable number.

142545031493 is a deficient number, since it is larger than the sum of its proper divisors (1).

142545031493 is an equidigital number, since it uses as much as digits as its factorization.

142545031493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 142545031493 in words is "one hundred forty-two billion, five hundred forty-five million, thirty-one thousand, four hundred ninety-three".