142241022281 has 4 divisors (see below), whose sum is σ = 142578887364. Its totient is φ = 141903157200.

The previous prime is 142241022271. The next prime is 142241022283. The reversal of 142241022281 is 182220142241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25970934025 + 116270088256 = 161155^2 + 340984^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142241022281 is a prime.

It is a super-2 number, since 2×142241022281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142241022283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168931910 + ... + 168932751.

It is an arithmetic number, because the mean of its divisors is an integer number (35644721841).

Almost surely, 2^142241022281 is an apocalyptic number.

It is an amenable number.

142241022281 is a deficient number, since it is larger than the sum of its proper divisors (337865083).

142241022281 is an equidigital number, since it uses as much as digits as its factorization.

142241022281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337865082.

The product of its (nonzero) digits is 4096, while the sum is 29.

The spelling of 142241022281 in words is "one hundred forty-two billion, two hundred forty-one million, twenty-two thousand, two hundred eighty-one".