1155005242 has 8 divisors (see below), whose sum is σ = 1733682132. Its totient is φ = 577111200.

The previous prime is 1155005221. The next prime is 1155005249. The reversal of 1155005242 is 2425005511.

It can be written as a sum of positive squares in 2 ways, for example, as 1011939721 + 143065521 = 31811^2 + 11961^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1155005249) 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 in 3 ways as a sum of consecutive naturals, for example, 192009 + ... + 197932.

Almost surely, 2^1155005242 is an apocalyptic number.

1155005242 is a deficient number, since it is larger than the sum of its proper divisors (578676890).

1155005242 is a wasteful number, since it uses less digits than its factorization.

1155005242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391424.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1155005242 is about 33985.3680574450. The cubic root of 1155005242 is about 1049.2073358431.

The spelling of 1155005242 in words is "one billion, one hundred fifty-five million, five thousand, two hundred forty-two".