12001240 has 32 divisors (see below), whose sum is σ = 27157680. Its totient is φ = 4772992.

The previous prime is 12001211. The next prime is 12001261. The reversal of 12001240 is 4210021.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7119 + ... + 8641.

Almost surely, 2^12001240 is an apocalyptic number.

12001240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001240 is an abundant number, since it is smaller than the sum of its proper divisors (15156440).

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

12001240 is a wasteful number, since it uses less digits than its factorization.

12001240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731 (or 1727 counting only the distinct ones).

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

The square root of 12001240 is about 3464.2805890978. The cubic root of 12001240 is about 228.9507340483.

Adding to 12001240 its reverse (4210021), we get a palindrome (16211261).

The spelling of 12001240 in words is "twelve million, one thousand, two hundred forty".