121113442 has 4 divisors (see below), whose sum is σ = 181670166. Its totient is φ = 60556720.

The previous prime is 121113439. The next prime is 121113449. The reversal of 121113442 is 244311121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244311121 = 12637 ⋅19333.

It can be written as a sum of positive squares in only one way, i.e., 118613881 + 2499561 = 10891^2 + 1581^2 .

It is not an unprimeable number, because it can be changed into a prime (121113449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30278359 + ... + 30278362.

Almost surely, 2^121113442 is an apocalyptic number.

121113442 is a deficient number, since it is larger than the sum of its proper divisors (60556724).

121113442 is an equidigital number, since it uses as much as digits as its factorization.

121113442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60556723.

The product of its digits is 192, while the sum is 19.

The square root of 121113442 is about 11005.1552465197. The cubic root of 121113442 is about 494.7632674087.

Adding to 121113442 its reverse (244311121), we get a palindrome (365424563).

The spelling of 121113442 in words is "one hundred twenty-one million, one hundred thirteen thousand, four hundred forty-two".