121514405 has 24 divisors (see below), whose sum is σ = 160641792. Its totient is φ = 88060896.

The previous prime is 121514363. The next prime is 121514429. The reversal of 121514405 is 504415121.

It is not a de Polignac number, because 121514405 - 2²² = 117320101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 23 ways as a sum of consecutive naturals, for example, 40052 + ... + 42978.

It is an arithmetic number, because the mean of its divisors is an integer number (6693408).

Almost surely, 2^121514405 is an apocalyptic number.

It is an amenable number.

121514405 is a deficient number, since it is larger than the sum of its proper divisors (39127387).

121514405 is a wasteful number, since it uses less digits than its factorization.

121514405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993 (or 2974 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 121514405 is about 11023.3572472274. The cubic root of 121514405 is about 495.3086603311.

Adding to 121514405 its reverse (504415121), we get a palindrome (625929526).

The spelling of 121514405 in words is "one hundred twenty-one million, five hundred fourteen thousand, four hundred five".