121376840 has 32 divisors (see below), whose sum is σ = 294106680. Its totient is φ = 44815872.

The previous prime is 121376833. The next prime is 121376869. The reversal of 121376840 is 48673121.

It can be written as a sum of positive squares in 4 ways, for example, as 92582884 + 28793956 = 9622^2 + 5366^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121376797 and 121376806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116189 + ... + 117228.

Almost surely, 2^121376840 is an apocalyptic number.

121376840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121376840 is an abundant number, since it is smaller than the sum of its proper divisors (172729840).

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

121376840 is a wasteful number, since it uses less digits than its factorization.

121376840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233441 (or 233437 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 121376840 is about 11017.1157750112. The cubic root of 121376840 is about 495.1216787562.

The spelling of 121376840 in words is "one hundred twenty-one million, three hundred seventy-six thousand, eight hundred forty".