121862985 has 8 divisors (see below), whose sum is σ = 194980800. Its totient is φ = 64993584.

The previous prime is 121862971. The next prime is 121863011. The reversal of 121862985 is 589268121.

It is a happy number.

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

It is not a de Polignac number, because 121862985 - 2⁶ = 121862921 is a prime.

It is a super-2 number, since 2×121862985² = 29701174226220450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4062085 + ... + 4062114.

It is an arithmetic number, because the mean of its divisors is an integer number (24372600).

Almost surely, 2^121862985 is an apocalyptic number.

121862985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121862985 is a deficient number, since it is larger than the sum of its proper divisors (73117815).

121862985 is an equidigital number, since it uses as much as digits as its factorization.

121862985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8124207.

The product of its digits is 69120, while the sum is 42.

The square root of 121862985 is about 11039.1568971548. The cubic root of 121862985 is about 495.7818274457.

The spelling of 121862985 in words is "one hundred twenty-one million, eight hundred sixty-two thousand, nine hundred eighty-five".