242243312140 has 24 divisors (see below), whose sum is σ = 526252713840. Its totient is φ = 93556037568.

The previous prime is 242243312131. The next prime is 242243312153. The reversal of 242243312140 is 41213342242.

It is a junction number, because it is equal to n+sod(n) for n = 242243312099 and 242243312108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208829862 + ... + 208831021.

It is an arithmetic number, because the mean of its divisors is an integer number (21927196410).

Almost surely, 2^242243312140 is an apocalyptic number.

242243312140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242243312140 is an abundant number, since it is smaller than the sum of its proper divisors (284009401700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242243312140 is a wasteful number, since it uses less digits than its factorization.

242243312140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417660921 (or 417660919 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 242243312140 its reverse (41213342242), we get a palindrome (283456654382).

The spelling of 242243312140 in words is "two hundred forty-two billion, two hundred forty-three million, three hundred twelve thousand, one hundred forty".