1201985 has 16 divisors (see below), whose sum is σ = 1555200. Its totient is φ = 888576.

The previous prime is 1201969. The next prime is 1201999. The reversal of 1201985 is 5891021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1201985 - 2⁴ = 1201969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6626 + ... + 6804.

It is an arithmetic number, because the mean of its divisors is an integer number (97200).

2^1201985 is an apocalyptic number.

It is an amenable number.

1201985 is a deficient number, since it is larger than the sum of its proper divisors (353215).

1201985 is a wasteful number, since it uses less digits than its factorization.

1201985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1201985 is about 1096.3507650383. The cubic root of 1201985 is about 106.3244184527.

The spelling of 1201985 in words is "one million, two hundred one thousand, nine hundred eighty-five".