1240444044 has 144 divisors (see below), whose sum is σ = 3836758016. Its totient is φ = 342921600.

The previous prime is 1240444043. The next prime is 1240444061. The reversal of 1240444044 is 4404440421.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1240443999 and 1240444017.

It is not an unprimeable number, because it can be changed into a prime (1240444043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 207984 + ... + 213864.

Almost surely, 2^1240444044 is an apocalyptic number.

1240444044 is a gapful number since it is divisible by the number (14) 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 1240444044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1918379008).

1240444044 is an abundant number, since it is smaller than the sum of its proper divisors (2596313972).

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

1240444044 is a wasteful number, since it uses less digits than its factorization.

1240444044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938 (or 5924 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

The square root of 1240444044 is about 35219.9381600820. The cubic root of 1240444044 is about 1074.4652957195.

Adding to 1240444044 its reverse (4404440421), we get a palindrome (5644884465).

It can be divided in two parts, 12404440 and 44, that added together give a square (12404484 = 3522²).

The spelling of 1240444044 in words is "one billion, two hundred forty million, four hundred forty-four thousand, forty-four".