121842371 has 6 divisors (see below), whose sum is σ = 141735060. Its totient is φ = 104436276.

The previous prime is 121842367. The next prime is 121842433. The reversal of 121842371 is 173248121.

It is not a de Polignac number, because 121842371 - 2² = 121842367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121842361) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1243241 + ... + 1243338.

It is an arithmetic number, because the mean of its divisors is an integer number (23622510).

Almost surely, 2^121842371 is an apocalyptic number.

121842371 is a deficient number, since it is larger than the sum of its proper divisors (19892689).

121842371 is an equidigital number, since it uses as much as digits as its factorization.

121842371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486593 (or 2486586 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 121842371 is about 11038.2231812915. The cubic root of 121842371 is about 495.7538708492.

The spelling of 121842371 in words is "one hundred twenty-one million, eight hundred forty-two thousand, three hundred seventy-one".