12054420 has 120 divisors (see below), whose sum is σ = 43257984. Its totient is φ = 2752704.

The previous prime is 12054409. The next prime is 12054421. The reversal of 12054420 is 2445021.

12054420 is a `hidden beast` number, since 120 + 544 + 2 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 12054393 and 12054402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12054421) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10809 + ... + 11871.

Almost surely, 2^12054420 is an apocalyptic number.

12054420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12054420 is the 2835-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12054420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21628992).

12054420 is an abundant number, since it is smaller than the sum of its proper divisors (31203564).

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

12054420 is a wasteful number, since it uses less digits than its factorization.

12054420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 12054420 is about 3471.9475802494. The cubic root of 12054420 is about 229.2884119319.

Adding to 12054420 its reverse (2445021), we get a palindrome (14499441).

It can be divided in two parts, 1205 and 4420, that added together give a square (5625 = 75²).

The spelling of 12054420 in words is "twelve million, fifty-four thousand, four hundred twenty".