121403106 has 48 divisors (see below), whose sum is σ = 296861760. Its totient is φ = 35518560.

The previous prime is 121403089. The next prime is 121403119. The reversal of 121403106 is 601304121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4830 + ... + 16313.

It is an arithmetic number, because the mean of its divisors is an integer number (6184620).

Almost surely, 2^121403106 is an apocalyptic number.

121403106 is an abundant number, since it is smaller than the sum of its proper divisors (175458654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121403106 is a wasteful number, since it uses less digits than its factorization.

121403106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21191 (or 21188 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 121403106 is about 11018.3077648067. The cubic root of 121403106 is about 495.1573910278.

Adding to 121403106 its reverse (601304121), we get a palindrome (722707227).

The spelling of 121403106 in words is "one hundred twenty-one million, four hundred three thousand, one hundred six".