142922235481 has 2 divisors, whose sum is σ = 142922235482. Its totient is φ = 142922235480.

The previous prime is 142922235413. The next prime is 142922235523. The reversal of 142922235481 is 184532229241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76349979225 + 66572256256 = 276315^2 + 258016^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142922235481 is a prime.

It is a super-2 number, since 2×142922235481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142922235881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71461117740 + 71461117741.

It is an arithmetic number, because the mean of its divisors is an integer number (71461117741).

Almost surely, 2^142922235481 is an apocalyptic number.

It is an amenable number.

142922235481 is a deficient number, since it is larger than the sum of its proper divisors (1).

142922235481 is an equidigital number, since it uses as much as digits as its factorization.

142922235481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 43.

The spelling of 142922235481 in words is "one hundred forty-two billion, nine hundred twenty-two million, two hundred thirty-five thousand, four hundred eighty-one".