121404803 has 16 divisors (see below), whose sum is σ = 139356000. Its totient is φ = 104772096.

The previous prime is 121404799. The next prime is 121404859. The reversal of 121404803 is 308404121.

It is not a de Polignac number, because 121404803 - 2² = 121404799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121404893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32948 + ... + 36446.

It is an arithmetic number, because the mean of its divisors is an integer number (8709750).

Almost surely, 2^121404803 is an apocalyptic number.

121404803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121404803 is a deficient number, since it is larger than the sum of its proper divisors (17951197).

121404803 is a wasteful number, since it uses less digits than its factorization.

121404803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 121404803 is about 11018.3847727333. The cubic root of 121404803 is about 495.1596981576.

Adding to 121404803 its reverse (308404121), we get a palindrome (429808924).

The spelling of 121404803 in words is "one hundred twenty-one million, four hundred four thousand, eight hundred three".