121404465 has 96 divisors (see below), whose sum is σ = 270466560. Its totient is φ = 48964608.

The previous prime is 121404461. The next prime is 121404467. The reversal of 121404465 is 564404121.

121404465 is a `hidden beast` number, since 1 + 214 + 0 + 446 + 5 = 666.

It is not a de Polignac number, because 121404465 - 2² = 121404461 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121404461) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 93541 + ... + 94829.

It is an arithmetic number, because the mean of its divisors is an integer number (2817360).

Almost surely, 2^121404465 is an apocalyptic number.

121404465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121404465 is an abundant number, since it is smaller than the sum of its proper divisors (149062095).

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

121404465 is a wasteful number, since it uses less digits than its factorization.

121404465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343 (or 1340 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 121404465 is about 11018.3694347213. The cubic root of 121404465 is about 495.1592386367.

Adding to 121404465 its reverse (564404121), we get a palindrome (685808586).

The spelling of 121404465 in words is "one hundred twenty-one million, four hundred four thousand, four hundred sixty-five".