12561034 has 4 divisors (see below), whose sum is σ = 18841554. Its totient is φ = 6280516.

The previous prime is 12561023. The next prime is 12561061. The reversal of 12561034 is 43016521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10909809 + 1651225 = 3303^2 + 1285^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12560996 and 12561014.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3140257 + ... + 3140260.

Almost surely, 2^12561034 is an apocalyptic number.

12561034 is a deficient number, since it is larger than the sum of its proper divisors (6280520).

12561034 is an equidigital number, since it uses as much as digits as its factorization.

12561034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6280519.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 12561034 is about 3544.1549063211. The cubic root of 12561034 is about 232.4565548761.

Adding to 12561034 its reverse (43016521), we get a palindrome (55577555).

The spelling of 12561034 in words is "twelve million, five hundred sixty-one thousand, thirty-four".