121840371 has 48 divisors (see below), whose sum is σ = 189190144. Its totient is φ = 75442752.

The previous prime is 121840351. The next prime is 121840393. The reversal of 121840371 is 173048121.

It is not a de Polignac number, because 121840371 - 2⁹ = 121839859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121840351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 959310 + ... + 959436.

Almost surely, 2^121840371 is an apocalyptic number.

121840371 is a deficient number, since it is larger than the sum of its proper divisors (67349773).

121840371 is a wasteful number, since it uses less digits than its factorization.

121840371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 121840371 is about 11038.1325866290. The cubic root of 121840371 is about 495.7511582921.

Adding to 121840371 its reverse (173048121), we get a palindrome (294888492).

The spelling of 121840371 in words is "one hundred twenty-one million, eight hundred forty thousand, three hundred seventy-one".