142244543531 has 2 divisors, whose sum is σ = 142244543532. Its totient is φ = 142244543530.

The previous prime is 142244543527. The next prime is 142244543647. The reversal of 142244543531 is 135345442241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142244543531 - 2² = 142244543527 is a prime.

It is a super-2 number, since 2×142244543531² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142244543131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71122271765 + 71122271766.

It is an arithmetic number, because the mean of its divisors is an integer number (71122271766).

Almost surely, 2^142244543531 is an apocalyptic number.

142244543531 is a deficient number, since it is larger than the sum of its proper divisors (1).

142244543531 is an equidigital number, since it uses as much as digits as its factorization.

142244543531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 38.

Adding to 142244543531 its reverse (135345442241), we get a palindrome (277589985772).

The spelling of 142244543531 in words is "one hundred forty-two billion, two hundred forty-four million, five hundred forty-three thousand, five hundred thirty-one".