121404305 has 8 divisors (see below), whose sum is σ = 158929344. Its totient is φ = 88294000.

The previous prime is 121404301. The next prime is 121404313. The reversal of 121404305 is 503404121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121404305 - 2² = 121404301 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121404301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1103621 + ... + 1103730.

It is an arithmetic number, because the mean of its divisors is an integer number (19866168).

Almost surely, 2^121404305 is an apocalyptic number.

It is an amenable number.

121404305 is a deficient number, since it is larger than the sum of its proper divisors (37525039).

121404305 is a wasteful number, since it uses less digits than its factorization.

121404305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207367.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 121404305 is about 11018.3621741164. The cubic root of 121404305 is about 495.1590211118.

Adding to 121404305 its reverse (503404121), we get a palindrome (624808426).

The spelling of 121404305 in words is "one hundred twenty-one million, four hundred four thousand, three hundred five".