1200003 has 8 divisors (see below), whose sum is σ = 1828608. Its totient is φ = 685704.

The previous prime is 1199999. The next prime is 1200007. The reversal of 1200003 is 3000021.

It is an interprime number because it is at equal distance from previous prime (1199999) and next prime (1200007).

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

It is not a de Polignac number, because 1200003 - 2² = 1199999 is a prime.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1199964 and 1200000.

It is not an unprimeable number, because it can be changed into a prime (1200007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28551 + ... + 28592.

It is an arithmetic number, because the mean of its divisors is an integer number (228576).

2^1200003 is an apocalyptic number.

1200003 is a deficient number, since it is larger than the sum of its proper divisors (628605).

1200003 is an equidigital number, since it uses as much as digits as its factorization.

1200003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57153.

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 1200003 is about 1095.4464843159. The cubic root of 1200003 is about 106.2659454731.

Adding to 1200003 its reverse (3000021), we get a palindrome (4200024).

It can be divided in two parts, 120000 and 3, that multiplied together give a square (360000 = 600²).

The spelling of 1200003 in words is "one million, two hundred thousand, three".