13150421 has 4 divisors (see below), whose sum is σ = 13170144. Its totient is φ = 13130700.

The previous prime is 13150399. The next prime is 13150471. The reversal of 13150421 is 12405131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12405131 = 1447 ⋅8573.

It is a cyclic number.

It is not a de Polignac number, because 13150421 - 2¹⁸ = 12888277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13150421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13150471) 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 3 ways as a sum of consecutive naturals, for example, 8825 + ... + 10206.

It is an arithmetic number, because the mean of its divisors is an integer number (3292536).

Almost surely, 2^13150421 is an apocalyptic number.

It is an amenable number.

13150421 is a deficient number, since it is larger than the sum of its proper divisors (19723).

13150421 is an equidigital number, since it uses as much as digits as its factorization.

13150421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19722.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 13150421 is about 3626.3509206915. The cubic root of 13150421 is about 236.0368909581.

Adding to 13150421 its reverse (12405131), we get a palindrome (25555552).

The spelling of 13150421 in words is "thirteen million, one hundred fifty thousand, four hundred twenty-one".