12126078 has 32 divisors (see below), whose sum is σ = 27609120. Its totient is φ = 3942720.

The previous prime is 12126077. The next prime is 12126091. The reversal of 12126078 is 87062121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126073) 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, 525 + ... + 4952.

It is an arithmetic number, because the mean of its divisors is an integer number (862785).

Almost surely, 2^12126078 is an apocalyptic number.

12126078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12126078 is an abundant number, since it is smaller than the sum of its proper divisors (15483042).

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

12126078 is a wasteful number, since it uses less digits than its factorization.

12126078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529 (or 5523 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 12126078 is about 3482.2518576347. The cubic root of 12126078 is about 229.7418527764.

Adding to 12126078 its reverse (87062121), we get a palindrome (99188199).

The spelling of 12126078 in words is "twelve million, one hundred twenty-six thousand, seventy-eight".