1240444445135 has 16 divisors (see below), whose sum is σ = 1701278899200. Its totient is φ = 850541503776.

The previous prime is 1240444445113. The next prime is 1240444445137. The reversal of 1240444445135 is 5315444440421.

It is a cyclic number.

It is not a de Polignac number, because 1240444445135 - 2²⁶ = 1240377336271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240444445092 and 1240444445101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240444445137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398345 + ... + 1624674.

It is an arithmetic number, because the mean of its divisors is an integer number (106329931200).

Almost surely, 2^{1240444445135} is an apocalyptic number.

1240444445135 is a deficient number, since it is larger than the sum of its proper divisors (460834454065).

1240444445135 is a wasteful number, since it uses less digits than its factorization.

1240444445135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040550.

The product of its (nonzero) digits is 614400, while the sum is 41.

Adding to 1240444445135 its reverse (5315444440421), we get a palindrome (6555888885556).

The spelling of 1240444445135 in words is "one trillion, two hundred forty billion, four hundred forty-four million, four hundred forty-five thousand, one hundred thirty-five".