242942455281 has 24 divisors (see below), whose sum is σ = 338943369024. Its totient is φ = 154491791520.

The previous prime is 242942455253. The next prime is 242942455303. The reversal of 242942455281 is 182554249242.

It is not a de Polignac number, because 242942455281 - 2⁷ = 242942455153 is a prime.

It is a super-2 number, since 2×242942455281² (a number of 24 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 242942455281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242942405281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9280471 + ... + 9306611.

It is an arithmetic number, because the mean of its divisors is an integer number (14122640376).

Almost surely, 2^242942455281 is an apocalyptic number.

It is an amenable number.

242942455281 is a deficient number, since it is larger than the sum of its proper divisors (96000913743).

242942455281 is an equidigital number, since it uses as much as digits as its factorization.

242942455281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26901 (or 26534 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 48.

The spelling of 242942455281 in words is "two hundred forty-two billion, nine hundred forty-two million, four hundred fifty-five thousand, two hundred eighty-one".