1081203 has 8 divisors (see below), whose sum is σ = 1461648. Its totient is φ = 710784.

The previous prime is 1081163. The next prime is 1081219. The reversal of 1081203 is 3021801.

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 1081203 - 2⁶ = 1081139 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1081243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2250 + ... + 2687.

It is an arithmetic number, because the mean of its divisors is an integer number (182706).

2^1081203 is an apocalyptic number.

1081203 is a deficient number, since it is larger than the sum of its proper divisors (380445).

1081203 is an equidigital number, since it uses as much as digits as its factorization.

1081203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5013.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1081203 is about 1039.8091170979. The cubic root of 1081203 is about 102.6366371292.

The spelling of 1081203 in words is "one million, eighty-one thousand, two hundred three".