12010040 has 64 divisors (see below), whose sum is σ = 31449600. Its totient is φ = 4042368.

The previous prime is 12010027. The next prime is 12010049. The reversal of 12010040 is 4001021.

12010040 = T₂₉₁ + T₂₉₂ + ... + T₄₅₈.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16157 + ... + 16883.

It is an arithmetic number, because the mean of its divisors is an integer number (491400).

Almost surely, 2^12010040 is an apocalyptic number.

12010040 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 12010040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15724800).

12010040 is an abundant number, since it is smaller than the sum of its proper divisors (19439560).

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

12010040 is a wasteful number, since it uses less digits than its factorization.

12010040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 800 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 12010040 is about 3465.5504613265. The cubic root of 12010040 is about 229.0066803286.

Adding to 12010040 its reverse (4001021), we get a palindrome (16011061).

The spelling of 12010040 in words is "twelve million, ten thousand, forty".