121894085 has 4 divisors (see below), whose sum is σ = 146272908. Its totient is φ = 97515264.

The previous prime is 121894081. The next prime is 121894093. The reversal of 121894085 is 580498121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580498121 = 7 ⋅82928303.

It can be written as a sum of positive squares in 2 ways, for example, as 26030404 + 95863681 = 5102^2 + 9791^2 .

It is a cyclic number.

It is not a de Polignac number, because 121894085 - 2² = 121894081 is a prime.

It is a super-3 number, since 3×121894085³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121894081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12189404 + ... + 12189413.

It is an arithmetic number, because the mean of its divisors is an integer number (36568227).

Almost surely, 2^121894085 is an apocalyptic number.

It is an amenable number.

121894085 is a deficient number, since it is larger than the sum of its proper divisors (24378823).

121894085 is an equidigital number, since it uses as much as digits as its factorization.

121894085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24378822.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 121894085 is about 11040.5654293609. The cubic root of 121894085 is about 495.8239991338.

The spelling of 121894085 in words is "one hundred twenty-one million, eight hundred ninety-four thousand, eighty-five".