1242205331515 has 16 divisors (see below), whose sum is σ = 1493103974400. Its totient is φ = 992126242432.

The previous prime is 1242205331509. The next prime is 1242205331519. The reversal of 1242205331515 is 5151335022421.

It is a cyclic number.

It is not a de Polignac number, because 1242205331515 - 2¹⁷ = 1242205200443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1242205331519) 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 15 ways as a sum of consecutive naturals, for example, 37593021 + ... + 37626049.

It is an arithmetic number, because the mean of its divisors is an integer number (93318998400).

Almost surely, 2^{1242205331515} is an apocalyptic number.

1242205331515 is a deficient number, since it is larger than the sum of its proper divisors (250898642885).

1242205331515 is a wasteful number, since it uses less digits than its factorization.

1242205331515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45206.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 1242205331515 in words is "one trillion, two hundred forty-two billion, two hundred five million, three hundred thirty-one thousand, five hundred fifteen".