142444513531 has 2 divisors, whose sum is σ = 142444513532. Its totient is φ = 142444513530.

The previous prime is 142444513511. The next prime is 142444513573. The reversal of 142444513531 is 135315444241.

It is a happy number.

142444513531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142444513531 - 2⁹ = 142444513019 is a prime.

It is a super-2 number, since 2×142444513531² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142444513501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71222256765 + 71222256766.

It is an arithmetic number, because the mean of its divisors is an integer number (71222256766).

Almost surely, 2^142444513531 is an apocalyptic number.

142444513531 is a deficient number, since it is larger than the sum of its proper divisors (1).

142444513531 is an equidigital number, since it uses as much as digits as its factorization.

142444513531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 37.

Adding to 142444513531 its reverse (135315444241), we get a palindrome (277759957772).

The spelling of 142444513531 in words is "one hundred forty-two billion, four hundred forty-four million, five hundred thirteen thousand, five hundred thirty-one".