12561234 has 32 divisors (see below), whose sum is σ = 29704320. Its totient is φ = 3464832.

The previous prime is 12561233. The next prime is 12561257. The reversal of 12561234 is 43216521.

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 (12561233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3939 + ... + 6374.

It is an arithmetic number, because the mean of its divisors is an integer number (928260).

Almost surely, 2^12561234 is an apocalyptic number.

12561234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12561234 is an abundant number, since it is smaller than the sum of its proper divisors (17143086).

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

12561234 is a wasteful number, since it uses less digits than its factorization.

12561234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10354.

The product of its digits is 1440, while the sum is 24.

The square root of 12561234 is about 3544.1831216798. The cubic root of 12561234 is about 232.4577886138.

Adding to 12561234 its reverse (43216521), we get a palindrome (55777755).

The spelling of 12561234 in words is "twelve million, five hundred sixty-one thousand, two hundred thirty-four".