12521238 has 16 divisors (see below), whose sum is σ = 25077360. Its totient is φ = 4167936.

The previous prime is 12521233. The next prime is 12521239. The reversal of 12521238 is 83212521.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12521233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6978 + ... + 8586.

It is an arithmetic number, because the mean of its divisors is an integer number (1567335).

Almost surely, 2^12521238 is an apocalyptic number.

12521238 is an abundant number, since it is smaller than the sum of its proper divisors (12556122).

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

12521238 is a wasteful number, since it uses less digits than its factorization.

12521238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911.

The product of its digits is 960, while the sum is 24.

The square root of 12521238 is about 3538.5361380096. The cubic root of 12521238 is about 232.2108047299.

Adding to 12521238 its reverse (83212521), we get a palindrome (95733759).

It can be divided in two parts, 125212 and 38, that added together give a triangular number (125250 = T₅₀₀).

The spelling of 12521238 in words is "twelve million, five hundred twenty-one thousand, two hundred thirty-eight".