12522426 has 16 divisors (see below), whose sum is σ = 28622784. Its totient is φ = 3577824.

The previous prime is 12522413. The next prime is 12522427. The reversal of 12522426 is 62422521.

It is a happy number.

It is a super-2 number, since 2×12522426² = 313622305850952, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12522396 and 12522405.

It is not an unprimeable number, because it can be changed into a prime (12522427) 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, 149035 + ... + 149118.

It is an arithmetic number, because the mean of its divisors is an integer number (1788924).

Almost surely, 2^12522426 is an apocalyptic number.

12522426 is an abundant number, since it is smaller than the sum of its proper divisors (16100358).

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

12522426 is a wasteful number, since it uses less digits than its factorization.

12522426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298165.

The product of its digits is 1920, while the sum is 24.

The square root of 12522426 is about 3538.7040000543. The cubic root of 12522426 is about 232.2181484582.

Adding to 12522426 its reverse (62422521), we get a palindrome (74944947).

It can be divided in two parts, 125224 and 26, that added together give a triangular number (125250 = T₅₀₀).

The spelling of 12522426 in words is "twelve million, five hundred twenty-two thousand, four hundred twenty-six".