1155082647242 has 4 divisors (see below), whose sum is σ = 1732623970866. Its totient is φ = 577541323620.

The previous prime is 1155082647197. The next prime is 1155082647247. The reversal of 1155082647242 is 2427462805511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1044420636961 + 110662010281 = 1021969^2 + 332659^2 .

It is a super-2 number, since 2×1155082647242² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1155082647247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288770661809 + ... + 288770661812.

Almost surely, 2^{1155082647242} is an apocalyptic number.

1155082647242 is a deficient number, since it is larger than the sum of its proper divisors (577541323624).

1155082647242 is an equidigital number, since it uses as much as digits as its factorization.

1155082647242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577541323623.

The product of its (nonzero) digits is 1075200, while the sum is 47.

The spelling of 1155082647242 in words is "one trillion, one hundred fifty-five billion, eighty-two million, six hundred forty-seven thousand, two hundred forty-two".