13100421 has 16 divisors (see below), whose sum is σ = 18802368. Its totient is φ = 8083200.

The previous prime is 13100401. The next prime is 13100459. The reversal of 13100421 is 12400131.

It is a happy number.

It is not a de Polignac number, because 13100421 - 2¹¹ = 13098373 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13100397 and 13100406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13100401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1006 + ... + 5216.

It is an arithmetic number, because the mean of its divisors is an integer number (1175148).

Almost surely, 2^13100421 is an apocalyptic number.

It is an amenable number.

13100421 is a deficient number, since it is larger than the sum of its proper divisors (5701947).

13100421 is a wasteful number, since it uses less digits than its factorization.

13100421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292.

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

The square root of 13100421 is about 3619.4503726395. The cubic root of 13100421 is about 235.7373610363.

Adding to 13100421 its reverse (12400131), we get a palindrome (25500552).

The spelling of 13100421 in words is "thirteen million, one hundred thousand, four hundred twenty-one".