121847085 has 20 divisors (see below), whose sum is σ = 218422908. Its totient is φ = 64984896.

The previous prime is 121847069. The next prime is 121847087. The reversal of 121847085 is 580748121.

It can be written as a sum of positive squares in 2 ways, for example, as 15468489 + 106378596 = 3933^2 + 10314^2 .

It is not a de Polignac number, because 121847085 - 2⁴ = 121847069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121847087) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 150024 + ... + 150833.

Almost surely, 2^121847085 is an apocalyptic number.

121847085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121847085 is a deficient number, since it is larger than the sum of its proper divisors (96575823).

121847085 is an equidigital number, since it uses as much as digits as its factorization.

121847085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300874 (or 300865 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 121847085 is about 11038.4367099694. The cubic root of 121847085 is about 495.7602642289.

The spelling of 121847085 in words is "one hundred twenty-one million, eight hundred forty-seven thousand, eighty-five".