1203885 has 24 divisors (see below), whose sum is σ = 2156544. Its totient is φ = 620640.

The previous prime is 1203863. The next prime is 1203887. The reversal of 1203885 is 5883021.

It is a happy number.

It is not a de Polignac number, because 1203885 - 2⁷ = 1203757 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 964 + ... + 1826.

It is an arithmetic number, because the mean of its divisors is an integer number (89856).

2^1203885 is an apocalyptic number.

1203885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1203885 is a deficient number, since it is larger than the sum of its proper divisors (952659).

1203885 is a wasteful number, since it uses less digits than its factorization.

1203885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1203885 is about 1097.2169338832. The cubic root of 1203885 is about 106.3804119537.

It can be divided in two parts, 120 and 3885, that added together give a triangular number (4005 = T₈₉).

The spelling of 1203885 in words is "one million, two hundred three thousand, eight hundred eighty-five".