15121434 has 16 divisors (see below), whose sum is σ = 30511872. Its totient is φ = 4995648.

The previous prime is 15121433. The next prime is 15121471. The reversal of 15121434 is 43412151.

It is a self number, because there is not a number n which added to its sum of digits gives 15121434.

It is not an unprimeable number, because it can be changed into a prime (15121433) 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 7 ways as a sum of consecutive naturals, for example, 10474 + ... + 11829.

It is an arithmetic number, because the mean of its divisors is an integer number (1906992).

Almost surely, 2^15121434 is an apocalyptic number.

15121434 is an abundant number, since it is smaller than the sum of its proper divisors (15390438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15121434 is a wasteful number, since it uses less digits than its factorization.

15121434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22421.

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

The square root of 15121434 is about 3888.6288071761. The cubic root of 15121434 is about 247.2849351000.

Adding to 15121434 its reverse (43412151), we get a palindrome (58533585).

The spelling of 15121434 in words is "fifteen million, one hundred twenty-one thousand, four hundred thirty-four".