13240421403 has 16 divisors (see below), whose sum is σ = 19262257536. Its totient is φ = 8023055040.

The previous prime is 13240421353. The next prime is 13240421459. The reversal of 13240421403 is 30412404231.

It is not a de Polignac number, because 13240421403 - 2²¹ = 13238324251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13240421203) 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, 167376 + ... + 233442.

It is an arithmetic number, because the mean of its divisors is an integer number (1203891096).

Almost surely, 2^13240421403 is an apocalyptic number.

13240421403 is a deficient number, since it is larger than the sum of its proper divisors (6021836133).

13240421403 is a wasteful number, since it uses less digits than its factorization.

13240421403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72154.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 13240421403 its reverse (30412404231), we get a palindrome (43652825634).

The spelling of 13240421403 in words is "thirteen billion, two hundred forty million, four hundred twenty-one thousand, four hundred three".