121678814 has 8 divisors (see below), whose sum is σ = 182572608. Its totient is φ = 60821280.

The previous prime is 121678807. The next prime is 121678819. The reversal of 121678814 is 418876121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121678819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2054 + ... + 15734.

It is an arithmetic number, because the mean of its divisors is an integer number (22821576).

Almost surely, 2^121678814 is an apocalyptic number.

121678814 is a deficient number, since it is larger than the sum of its proper divisors (60893794).

121678814 is a wasteful number, since it uses less digits than its factorization.

121678814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18130.

The product of its digits is 21504, while the sum is 38.

The square root of 121678814 is about 11030.8120281328. The cubic root of 121678814 is about 495.5319438799.

The spelling of 121678814 in words is "one hundred twenty-one million, six hundred seventy-eight thousand, eight hundred fourteen".