15434121 has 4 divisors (see below), whose sum is σ = 20578832. Its totient is φ = 10289412.

The previous prime is 15434117. The next prime is 15434123. The reversal of 15434121 is 12143451.

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.

It is not a de Polignac number, because 15434121 - 2² = 15434117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15434123) 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, 2572351 + ... + 2572356.

It is an arithmetic number, because the mean of its divisors is an integer number (5144708).

Almost surely, 2^15434121 is an apocalyptic number.

It is an amenable number.

15434121 is a deficient number, since it is larger than the sum of its proper divisors (5144711).

15434121 is an equidigital number, since it uses as much as digits as its factorization.

15434121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5144710.

The product of its digits is 480, while the sum is 21.

The square root of 15434121 is about 3928.6283866001. The cubic root of 15434121 is about 248.9778048312.

Adding to 15434121 its reverse (12143451), we get a palindrome (27577572).

The spelling of 15434121 in words is "fifteen million, four hundred thirty-four thousand, one hundred twenty-one".