121178460 has 96 divisors (see below), whose sum is σ = 367278912. Its totient is φ = 29675520.

The previous prime is 121178413. The next prime is 121178471. The reversal of 121178460 is 64871121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262630 + ... + 263090.

It is an arithmetic number, because the mean of its divisors is an integer number (3825822).

Almost surely, 2^121178460 is an apocalyptic number.

121178460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121178460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183639456).

121178460 is an abundant number, since it is smaller than the sum of its proper divisors (246100452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121178460 is a wasteful number, since it uses less digits than its factorization.

121178460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 121178460 is about 11008.1088294039. The cubic root of 121178460 is about 494.8517870723.

The spelling of 121178460 in words is "one hundred twenty-one million, one hundred seventy-eight thousand, four hundred sixty".