121873849 has 8 divisors (see below), whose sum is σ = 127648512. Its totient is φ = 116138880.

The previous prime is 121873831. The next prime is 121873859. The reversal of 121873849 is 948378121.

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

It is a cyclic number.

It is not a de Polignac number, because 121873849 - 2⁷ = 121873721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121873859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3544 + ... + 16009.

It is an arithmetic number, because the mean of its divisors is an integer number (15956064).

Almost surely, 2^121873849 is an apocalyptic number.

It is an amenable number.

121873849 is a deficient number, since it is larger than the sum of its proper divisors (5774663).

121873849 is a wasteful number, since it uses less digits than its factorization.

121873849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19847.

The product of its digits is 96768, while the sum is 43.

The square root of 121873849 is about 11039.6489527521. The cubic root of 121873849 is about 495.7965598758.

The spelling of 121873849 in words is "one hundred twenty-one million, eight hundred seventy-three thousand, eight hundred forty-nine".