121436115 has 16 divisors (see below), whose sum is σ = 195719328. Its totient is φ = 64292096.

The previous prime is 121436111. The next prime is 121436123. The reversal of 121436115 is 511634121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121436115 - 2² = 121436111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121436111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27492 + ... + 31601.

It is an arithmetic number, because the mean of its divisors is an integer number (12232458).

Almost surely, 2^121436115 is an apocalyptic number.

121436115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121436115 is a deficient number, since it is larger than the sum of its proper divisors (74283213).

121436115 is a wasteful number, since it uses less digits than its factorization.

121436115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59238.

The product of its digits is 720, while the sum is 24.

The square root of 121436115 is about 11019.8055790472. The cubic root of 121436115 is about 495.2022640401.

The spelling of 121436115 in words is "one hundred twenty-one million, four hundred thirty-six thousand, one hundred fifteen".