13402003 has 6 divisors (see below), whose sum is σ = 13695476. Its totient is φ = 13114692.

The previous prime is 13401989. The next prime is 13402007. The reversal of 13402003 is 30020431.

It is not a de Polignac number, because 13402003 - 2²¹ = 11304851 is a prime.

It is a super-2 number, since 2×13402003² = 359227368824018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13402007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 825 + ... + 5242.

Almost surely, 2^13402003 is an apocalyptic number.

13402003 is a deficient number, since it is larger than the sum of its proper divisors (293473).

13402003 is an frugal number, since it uses more digits than its factorization.

13402003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161 (or 6114 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 13402003 is about 3660.8746222727. The cubic root of 13402003 is about 237.5326078959.

Adding to 13402003 its reverse (30020431), we get a palindrome (43422434).

The spelling of 13402003 in words is "thirteen million, four hundred two thousand, three".