121104142 has 4 divisors (see below), whose sum is σ = 181656216. Its totient is φ = 60552070.

The previous prime is 121104127. The next prime is 121104161. The reversal of 121104142 is 241401121.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30276034 + ... + 30276037.

It is an arithmetic number, because the mean of its divisors is an integer number (45414054).

Almost surely, 2^121104142 is an apocalyptic number.

121104142 is a deficient number, since it is larger than the sum of its proper divisors (60552074).

121104142 is an equidigital number, since it uses as much as digits as its factorization.

121104142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60552073.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 121104142 is about 11004.7327091575. The cubic root of 121104142 is about 494.7506032042.

Adding to 121104142 its reverse (241401121), we get a palindrome (362505263).

The spelling of 121104142 in words is "one hundred twenty-one million, one hundred four thousand, one hundred forty-two".