12002140 has 24 divisors (see below), whose sum is σ = 25270560. Its totient is φ = 4788288.

The previous prime is 12002093. The next prime is 12002147. The reversal of 12002140 is 4120021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002147) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12601 + ... + 13519.

It is an arithmetic number, because the mean of its divisors is an integer number (1052940).

Almost surely, 2^12002140 is an apocalyptic number.

12002140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002140 is an abundant number, since it is smaller than the sum of its proper divisors (13268420).

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

12002140 is a wasteful number, since it uses less digits than its factorization.

12002140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1579 counting only the distinct ones).

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

The square root of 12002140 is about 3464.4104837620. The cubic root of 12002140 is about 228.9564570822.

Adding to 12002140 its reverse (4120021), we get a palindrome (16122161).

The spelling of 12002140 in words is "twelve million, two thousand, one hundred forty".