121240143100242 has 12 divisors (see below), whose sum is σ = 262686976717230. Its totient is φ = 40413381033408.

The previous prime is 121240143100217. The next prime is 121240143100243. The reversal of 121240143100242 is 242001341042121.

121240143100242 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 401 + 4 + 3 + 10 + 0 + 242 = 666.

It can be written as a sum of positive squares in only one way, i.e., 107848868870961 + 13391274229281 = 10385031^2 + 3659409^2 .

It is not an unprimeable number, because it can be changed into a prime (121240143100243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3367781752767 + ... + 3367781752802.

Almost surely, 2^{121240143100242} is an apocalyptic number.

121240143100242 is an abundant number, since it is smaller than the sum of its proper divisors (141446833616988).

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

121240143100242 is a wasteful number, since it uses less digits than its factorization.

121240143100242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6735563505577 (or 6735563505574 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 121240143100242 its reverse (242001341042121), we get a palindrome (363241484142363).

The spelling of 121240143100242 in words is "one hundred twenty-one trillion, two hundred forty billion, one hundred forty-three million, one hundred thousand, two hundred forty-two".