1240534044 has 72 divisors (see below), whose sum is σ = 3251167920. Its totient is φ = 398361600.

The previous prime is 1240533977. The next prime is 1240534069. The reversal of 1240534044 is 4404350421.

It is a happy number.

1240534044 is a `hidden beast` number, since 124 + 0 + 534 + 0 + 4 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1240533999 and 1240534017.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 595084 + ... + 597164.

It is an arithmetic number, because the mean of its divisors is an integer number (45155110).

Almost surely, 2^1240534044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240534044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1625583960).

1240534044 is an abundant number, since it is smaller than the sum of its proper divisors (2010633876).

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

1240534044 is a wasteful number, since it uses less digits than its factorization.

1240534044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691 (or 2686 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 1240534044 is about 35221.2158222853. The cubic root of 1240534044 is about 1074.4912809136.

Adding to 1240534044 its reverse (4404350421), we get a palindrome (5644884465).

The spelling of 1240534044 in words is "one billion, two hundred forty million, five hundred thirty-four thousand, forty-four".