121148878 has 8 divisors (see below), whose sum is σ = 186634872. Its totient is φ = 58937256.

The previous prime is 121148873. The next prime is 121148903. The reversal of 121148878 is 878841121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121148878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121148873) 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, 818500 + ... + 818647.

It is an arithmetic number, because the mean of its divisors is an integer number (23329359).

Almost surely, 2^121148878 is an apocalyptic number.

121148878 is a deficient number, since it is larger than the sum of its proper divisors (65485994).

121148878 is a wasteful number, since it uses less digits than its factorization.

121148878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637186.

The product of its digits is 28672, while the sum is 40.

The square root of 121148878 is about 11006.7651015182. The cubic root of 121148878 is about 494.8115161723.

Adding to 121148878 its reverse (878841121), we get a palindrome (999989999).

The spelling of 121148878 in words is "one hundred twenty-one million, one hundred forty-eight thousand, eight hundred seventy-eight".