121442103 has 12 divisors (see below), whose sum is σ = 180157848. Its totient is φ = 78773040.

The previous prime is 121442089. The next prime is 121442107. The reversal of 121442103 is 301244121.

121442103 is a `hidden beast` number, since 121 + 442 + 103 = 666.

It is not a de Polignac number, because 121442103 - 2⁵ = 121442071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121442107) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 182013 + ... + 182678.

It is an arithmetic number, because the mean of its divisors is an integer number (15013154).

Almost surely, 2^121442103 is an apocalyptic number.

121442103 is a deficient number, since it is larger than the sum of its proper divisors (58715745).

121442103 is a wasteful number, since it uses less digits than its factorization.

121442103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364734 (or 364731 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121442103 is about 11020.0772683317. The cubic root of 121442103 is about 495.2104033607.

Adding to 121442103 its reverse (301244121), we get a palindrome (422686224).

The spelling of 121442103 in words is "one hundred twenty-one million, four hundred forty-two thousand, one hundred three".