1240444442 has 12 divisors (see below), whose sum is σ = 1881831966. Its totient is φ = 613245600.

The previous prime is 1240444399. The next prime is 1240444453. The reversal of 1240444442 is 2444440421.

It can be written as a sum of positive squares in 3 ways, for example, as 405176641 + 835267801 = 20129^2 + 28901^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23309 + ... + 54992.

Almost surely, 2^1240444442 is an apocalyptic number.

1240444442 is a deficient number, since it is larger than the sum of its proper divisors (641387524).

1240444442 is an frugal number, since it uses more digits than its factorization.

1240444442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78481 (or 78392 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 29.

The square root of 1240444442 is about 35219.9438102902. The cubic root of 1240444442 is about 1074.4654106345.

Adding to 1240444442 its reverse (2444440421), we get a palindrome (3684884863).

The spelling of 1240444442 in words is "one billion, two hundred forty million, four hundred forty-four thousand, four hundred forty-two".