11421003 has 8 divisors (see below), whose sum is σ = 16612416. Its totient is φ = 6921800.

The previous prime is 11420971. The next prime is 11421017. The reversal of 11421003 is 30012411.

It is a happy number.

11421003 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 a cyclic number.

It is not a de Polignac number, because 11421003 - 2⁵ = 11420971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11421003.

It is not an unprimeable number, because it can be changed into a prime (11421203) 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, 173013 + ... + 173078.

It is an arithmetic number, because the mean of its divisors is an integer number (2076552).

Almost surely, 2^11421003 is an apocalyptic number.

11421003 is a deficient number, since it is larger than the sum of its proper divisors (5191413).

11421003 is a wasteful number, since it uses less digits than its factorization.

11421003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346105.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 11421003 is about 3379.4974478464. The cubic root of 11421003 is about 225.1998422032.

Adding to 11421003 its reverse (30012411), we get a palindrome (41433414).

It can be divided in two parts, 1142 and 1003, that added together give a triangular number (2145 = T₆₅).

The spelling of 11421003 in words is "eleven million, four hundred twenty-one thousand, three".