121387814 has 4 divisors (see below), whose sum is σ = 182081724. Its totient is φ = 60693906.

The previous prime is 121387801. The next prime is 121387829. The reversal of 121387814 is 418783121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 418783121 = 59 ⋅7098019.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30346952 + ... + 30346955.

It is an arithmetic number, because the mean of its divisors is an integer number (45520431).

Almost surely, 2^121387814 is an apocalyptic number.

121387814 is a deficient number, since it is larger than the sum of its proper divisors (60693910).

121387814 is an equidigital number, since it uses as much as digits as its factorization.

121387814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60693909.

The product of its digits is 10752, while the sum is 35.

The square root of 121387814 is about 11017.6138069911. The cubic root of 121387814 is about 495.1366000585.

The spelling of 121387814 in words is "one hundred twenty-one million, three hundred eighty-seven thousand, eight hundred fourteen".