12521234 has 16 divisors (see below), whose sum is σ = 20545056. Its totient is φ = 5676000.

The previous prime is 12521233. The next prime is 12521239. The reversal of 12521234 is 43212521.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12521233) 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, 12749 + ... + 13695.

It is an arithmetic number, because the mean of its divisors is an integer number (1284066).

Almost surely, 2^12521234 is an apocalyptic number.

12521234 is a deficient number, since it is larger than the sum of its proper divisors (8023822).

12521234 is a wasteful number, since it uses less digits than its factorization.

12521234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its digits is 480, while the sum is 20.

The square root of 12521234 is about 3538.5355728041. The cubic root of 12521234 is about 232.2107800027.

Adding to 12521234 its reverse (43212521), we get a palindrome (55733755).

The spelling of 12521234 in words is "twelve million, five hundred twenty-one thousand, two hundred thirty-four".