121403103 has 16 divisors (see below), whose sum is σ = 180414720. Its totient is φ = 72164736.

The previous prime is 121403089. The next prime is 121403119. The reversal of 121403103 is 301304121.

It is not a de Polignac number, because 121403103 - 2⁹ = 121402591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121403153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61675 + ... + 63612.

It is an arithmetic number, because the mean of its divisors is an integer number (11275920).

Almost surely, 2^121403103 is an apocalyptic number.

121403103 is a deficient number, since it is larger than the sum of its proper divisors (59011617).

121403103 is a wasteful number, since it uses less digits than its factorization.

121403103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125326.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 121403103 is about 11018.3076286697. The cubic root of 121403103 is about 495.1573869492.

Adding to 121403103 its reverse (301304121), we get a palindrome (422707224).

The spelling of 121403103 in words is "one hundred twenty-one million, four hundred three thousand, one hundred three".