1158581042 has 16 divisors (see below), whose sum is σ = 1899459072. Its totient is φ = 527626560.

The previous prime is 1158581041. The next prime is 1158581063. The reversal of 1158581042 is 2401858511.

It is a junction number, because it is equal to n+sod(n) for n = 1158580993 and 1158581011.

It is not an unprimeable number, because it can be changed into a prime (1158581041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548558 + ... + 550665.

It is an arithmetic number, because the mean of its divisors is an integer number (118716192).

Almost surely, 2^1158581042 is an apocalyptic number.

1158581042 is a deficient number, since it is larger than the sum of its proper divisors (740878030).

1158581042 is a wasteful number, since it uses less digits than its factorization.

1158581042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099273.

The product of its (nonzero) digits is 12800, while the sum is 35.

The square root of 1158581042 is about 34037.9353369149. The cubic root of 1158581042 is about 1050.2889732225.

The spelling of 1158581042 in words is "one billion, one hundred fifty-eight million, five hundred eighty-one thousand, forty-two".