2421003 has 16 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 1424544.

The previous prime is 2420993. The next prime is 2421031. The reversal of 2421003 is 3001242.

It is not a de Polignac number, because 2421003 - 2¹⁰ = 2419979 is a prime.

It is a super-2 number, since 2×2421003² = 11722511052018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2421003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453 + ... + 2246.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

2^2421003 is an apocalyptic number.

2421003 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2421003 is a deficient number, since it is larger than the sum of its proper divisors (1207797).

2421003 is a wasteful number, since it uses less digits than its factorization.

2421003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2421003 is about 1555.9572616239. The cubic root of 2421003 is about 134.2760145724.

Adding to 2421003 its reverse (3001242), we get a palindrome (5422245).

The spelling of 2421003 in words is "two million, four hundred twenty-one thousand, three".