1000002403 has 4 divisors (see below), whose sum is σ = 1014927880. Its totient is φ = 985076928.

The previous prime is 1000002361. The next prime is 1000002431. The reversal of 1000002403 is 3042000001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3042000001 = 27737 ⋅109673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000002403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000002403.

It is not an unprimeable number, because it can be changed into a prime (1000002103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7462638 + ... + 7462771.

It is an arithmetic number, because the mean of its divisors is an integer number (253731970).

Almost surely, 2^1000002403 is an apocalyptic number.

1000002403 is a deficient number, since it is larger than the sum of its proper divisors (14925477).

1000002403 is an equidigital number, since it uses as much as digits as its factorization.

1000002403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14925476.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 1000002403 is about 31622.8145964271. The cubic root of 1000002403 is about 1000.0008009994. Note that the first 3 decimals are identical.

Adding to 1000002403 its reverse (3042000001), we get a palindrome (4042002404).

It can be divided in two parts, 1000002 and 403, that added together give a triangular number (1000405 = T₁₄₁₄).

The spelling of 1000002403 in words is "one billion, two thousand, four hundred three".