12123054 has 16 divisors (see below), whose sum is σ = 26940240. Its totient is φ = 4041000.

The previous prime is 12123053. The next prime is 12123101. The reversal of 12123054 is 45032121.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112197 + ... + 112304.

It is an arithmetic number, because the mean of its divisors is an integer number (1683765).

Almost surely, 2^12123054 is an apocalyptic number.

12123054 is an abundant number, since it is smaller than the sum of its proper divisors (14817186).

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

12123054 is a wasteful number, since it uses less digits than its factorization.

12123054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224512 (or 224506 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 12123054 is about 3481.8176287681. The cubic root of 12123054 is about 229.7227535226.

Adding to 12123054 its reverse (45032121), we get a palindrome (57155175).

The spelling of 12123054 in words is "twelve million, one hundred twenty-three thousand, fifty-four".