121404415 has 16 divisors (see below), whose sum is σ = 159169536. Its totient is φ = 88160800.

The previous prime is 121404383. The next prime is 121404449. The reversal of 121404415 is 514404121.

It is not a de Polignac number, because 121404415 - 2⁵ = 121404383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48894 + ... + 51316.

It is an arithmetic number, because the mean of its divisors is an integer number (9948096).

Almost surely, 2^121404415 is an apocalyptic number.

121404415 is a deficient number, since it is larger than the sum of its proper divisors (37765121).

121404415 is a wasteful number, since it uses less digits than its factorization.

121404415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 121404415 is about 11018.3671657828. The cubic root of 121404415 is about 495.1591706602.

Adding to 121404415 its reverse (514404121), we get a palindrome (635808536).

The spelling of 121404415 in words is "one hundred twenty-one million, four hundred four thousand, four hundred fifteen".