12780134 has 8 divisors (see below), whose sum is σ = 20003760. Its totient is φ = 6112216.

The previous prime is 12780127. The next prime is 12780139. The reversal of 12780134 is 43108721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12780139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138869 + ... + 138960.

It is an arithmetic number, because the mean of its divisors is an integer number (2500470).

Almost surely, 2^12780134 is an apocalyptic number.

12780134 is a deficient number, since it is larger than the sum of its proper divisors (7223626).

12780134 is a wasteful number, since it uses less digits than its factorization.

12780134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277854.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 12780134 is about 3574.9313280118. The cubic root of 12780134 is about 233.8003386111.

Adding to 12780134 its reverse (43108721), we get a palindrome (55888855).

The spelling of 12780134 in words is "twelve million, seven hundred eighty thousand, one hundred thirty-four".