121105442 has 8 divisors (see below), whose sum is σ = 189556416. Its totient is φ = 57919972.

The previous prime is 121105427. The next prime is 121105447. The reversal of 121105442 is 244501121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121105447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1316318 + ... + 1316409.

It is an arithmetic number, because the mean of its divisors is an integer number (23694552).

Almost surely, 2^121105442 is an apocalyptic number.

121105442 is a deficient number, since it is larger than the sum of its proper divisors (68450974).

121105442 is a wasteful number, since it uses less digits than its factorization.

121105442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632752.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 121105442 is about 11004.7917744953. The cubic root of 121105442 is about 494.7523735083.

Adding to 121105442 its reverse (244501121), we get a palindrome (365606563).

The spelling of 121105442 in words is "one hundred twenty-one million, one hundred five thousand, four hundred forty-two".