12051240 has 64 divisors (see below), whose sum is σ = 37411200. Its totient is φ = 3101952.

The previous prime is 12051239. The next prime is 12051293. The reversal of 12051240 is 4215021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1749 + ... + 5211.

It is an arithmetic number, because the mean of its divisors is an integer number (584550).

Almost surely, 2^12051240 is an apocalyptic number.

12051240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12051240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18705600).

12051240 is an abundant number, since it is smaller than the sum of its proper divisors (25359960).

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

12051240 is a wasteful number, since it uses less digits than its factorization.

12051240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506 (or 3502 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 12051240 is about 3471.4895938199. The cubic root of 12051240 is about 229.2682477853.

Adding to 12051240 its reverse (4215021), we get a palindrome (16266261).

It can be divided in two parts, 120 and 51240, that added together give a triangular number (51360 = T₃₂₀).

The spelling of 12051240 in words is "twelve million, fifty-one thousand, two hundred forty".