12020140 has 36 divisors (see below), whose sum is σ = 27751248. Its totient is φ = 4370080.

The previous prime is 12020137. The next prime is 12020161. The reversal of 12020140 is 4102021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64 + ... + 4903.

It is an arithmetic number, because the mean of its divisors is an integer number (770868).

Almost surely, 2^12020140 is an apocalyptic number.

12020140 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 12020140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13875624).

12020140 is an abundant number, since it is smaller than the sum of its proper divisors (15731108).

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

12020140 is a wasteful number, since it uses less digits than its factorization.

12020140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4998 (or 4985 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 12020140 is about 3467.0073550542. The cubic root of 12020140 is about 229.0708577280.

Adding to 12020140 its reverse (4102021), we get a palindrome (16122161).

The spelling of 12020140 in words is "twelve million, twenty thousand, one hundred forty".