121130242 has 4 divisors (see below), whose sum is σ = 181695366. Its totient is φ = 60565120.

The previous prime is 121130239. The next prime is 121130249. The reversal of 121130242 is 242031121.

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

It can be written as a sum of positive squares in only one way, i.e., 121022001 + 108241 = 11001^2 + 329^2 .

It is a super-3 number, since 3×121130242³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121130249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30282559 + ... + 30282562.

Almost surely, 2^121130242 is an apocalyptic number.

121130242 is a deficient number, since it is larger than the sum of its proper divisors (60565124).

121130242 is an equidigital number, since it uses as much as digits as its factorization.

121130242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60565123.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 121130242 is about 11005.9184986988. The cubic root of 121130242 is about 494.7861430379.

Adding to 121130242 its reverse (242031121), we get a palindrome (363161363).

The spelling of 121130242 in words is "one hundred twenty-one million, one hundred thirty thousand, two hundred forty-two".