12041231240 has 96 divisors (see below), whose sum is σ = 28836767880. Its totient is φ = 4524269568.

The previous prime is 12041231233. The next prime is 12041231243. The reversal of 12041231240 is 4213214021.

It can be written as a sum of positive squares in 12 ways, for example, as 7474985764 + 4566245476 = 86458^2 + 67574^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (12041231243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11016134 + ... + 11017226.

Almost surely, 2^12041231240 is an apocalyptic number.

12041231240 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 12041231240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14418383940).

12041231240 is an abundant number, since it is smaller than the sum of its proper divisors (16795536640).

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

12041231240 is a wasteful number, since it uses less digits than its factorization.

12041231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091 (or 2070 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12041231240 its reverse (4213214021), we get a palindrome (16254445261).

The spelling of 12041231240 in words is "twelve billion, forty-one million, two hundred thirty-one thousand, two hundred forty".