1200285 has 32 divisors (see below), whose sum is σ = 2263680. Its totient is φ = 601344.

The previous prime is 1200253. The next prime is 1200307. The reversal of 1200285 is 5820021.

It is not a de Polignac number, because 1200285 - 2⁵ = 1200253 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2034 + ... + 2556.

It is an arithmetic number, because the mean of its divisors is an integer number (70740).

2^1200285 is an apocalyptic number.

1200285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1200285 is a deficient number, since it is larger than the sum of its proper divisors (1063395).

1200285 is a wasteful number, since it uses less digits than its factorization.

1200285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1200285 is about 1095.5751913949. The cubic root of 1200285 is about 106.2742689660.

It can be divided in two parts, 1200 and 285, that added together give a triangular number (1485 = T₅₄).

The spelling of 1200285 in words is "one million, two hundred thousand, two hundred eighty-five".