13421603 has 8 divisors (see below), whose sum is σ = 14490000. Its totient is φ = 12358368.

The previous prime is 13421591. The next prime is 13421651. The reversal of 13421603 is 30612431.

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 13421603 - 2⁶ = 13421539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13621603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5453 + ... + 7521.

It is an arithmetic number, because the mean of its divisors is an integer number (1811250).

Almost surely, 2^13421603 is an apocalyptic number.

13421603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13421603 is a deficient number, since it is larger than the sum of its proper divisors (1068397).

13421603 is a wasteful number, since it uses less digits than its factorization.

13421603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13421603 is about 3663.5506001692. The cubic root of 13421603 is about 237.6483461026.

The spelling of 13421603 in words is "thirteen million, four hundred twenty-one thousand, six hundred three".