1020003 has 8 divisors (see below), whose sum is σ = 1391808. Its totient is φ = 664104.

The previous prime is 1020001. The next prime is 1020007. The reversal of 1020003 is 3000201.

1020003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1020003 - 2¹ = 1020001 is a prime.

It is a super-2 number, since 2×1020003² = 2080812240018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1019973 and 1020000.

It is not an unprimeable number, because it can be changed into a prime (1020001) 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, 3825 + ... + 4082.

It is an arithmetic number, because the mean of its divisors is an integer number (173976).

2^1020003 is an apocalyptic number.

1020003 is a deficient number, since it is larger than the sum of its proper divisors (371805).

1020003 is an equidigital number, since it uses as much as digits as its factorization.

1020003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7953.

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

The square root of 1020003 is about 1009.9519790564. The cubic root of 1020003 is about 100.6623696444.

Adding to 1020003 its reverse (3000201), we get a palindrome (4020204).

The spelling of 1020003 in words is "one million, twenty thousand, three".