142271322538 has 4 divisors (see below), whose sum is σ = 213406983810. Its totient is φ = 71135661268.

The previous prime is 142271322533. The next prime is 142271322547. The reversal of 142271322538 is 835223172241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 835223172241 = 23 ⋅36314050967.

It can be written as a sum of positive squares in only one way, i.e., 88258308889 + 54013013649 = 297083^2 + 232407^2 .

It is a super-2 number, since 2×142271322538² (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 142271322538.

It is not an unprimeable number, because it can be changed into a prime (142271322533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35567830633 + ... + 35567830636.

Almost surely, 2^142271322538 is an apocalyptic number.

142271322538 is a deficient number, since it is larger than the sum of its proper divisors (71135661272).

142271322538 is an equidigital number, since it uses as much as digits as its factorization.

142271322538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71135661271.

The product of its digits is 161280, while the sum is 40.

Adding to 142271322538 its reverse (835223172241), we get a palindrome (977494494779).

The spelling of 142271322538 in words is "one hundred forty-two billion, two hundred seventy-one million, three hundred twenty-two thousand, five hundred thirty-eight".