1242035645005 has 16 divisors (see below), whose sum is σ = 1555481951280. Its totient is φ = 950875491328.

The previous prime is 1242035645003. The next prime is 1242035645017. The reversal of 1242035645005 is 5005465302421.

It can be written as a sum of positive squares in 8 ways, for example, as 355762145764 + 886273499241 = 596458^2 + 941421^2 .

It is a cyclic number.

It is not a de Polignac number, because 1242035645005 - 2¹ = 1242035645003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242035645003) 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, 37885222 + ... + 37917991.

It is an arithmetic number, because the mean of its divisors is an integer number (97217621955).

Almost surely, 2^{1242035645005} is an apocalyptic number.

It is an amenable number.

1242035645005 is a deficient number, since it is larger than the sum of its proper divisors (313446306275).

1242035645005 is a wasteful number, since it uses less digits than its factorization.

1242035645005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75803360.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 1242035645005 in words is "one trillion, two hundred forty-two billion, thirty-five million, six hundred forty-five thousand, five".