12380534 has 4 divisors (see below), whose sum is σ = 18570804. Its totient is φ = 6190266.

The previous prime is 12380531. The next prime is 12380561. The reversal of 12380534 is 43508321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43508321 = 17 ⋅2559313.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12380531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3095132 + ... + 3095135.

It is an arithmetic number, because the mean of its divisors is an integer number (4642701).

Almost surely, 2^12380534 is an apocalyptic number.

12380534 is a deficient number, since it is larger than the sum of its proper divisors (6190270).

12380534 is an equidigital number, since it uses as much as digits as its factorization.

12380534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6190269.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 12380534 is about 3518.5983004600. The cubic root of 12380534 is about 231.3377243023.

Adding to 12380534 its reverse (43508321), we get a palindrome (55888855).

The spelling of 12380534 in words is "twelve million, three hundred eighty thousand, five hundred thirty-four".