1155135242 has 8 divisors (see below), whose sum is σ = 1733355300. Its totient is φ = 577350144.

The previous prime is 1155135173. The next prime is 1155135251. The reversal of 1155135242 is 2425315511.

It can be written as a sum of positive squares in 2 ways, for example, as 894667921 + 260467321 = 29911^2 + 16139^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102017 + ... + 112772.

Almost surely, 2^1155135242 is an apocalyptic number.

1155135242 is a deficient number, since it is larger than the sum of its proper divisors (578220058).

1155135242 is a wasteful number, since it uses less digits than its factorization.

1155135242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217480.

The product of its digits is 6000, while the sum is 29.

The square root of 1155135242 is about 33987.2805914213. The cubic root of 1155135242 is about 1049.2466983879.

The spelling of 1155135242 in words is "one billion, one hundred fifty-five million, one hundred thirty-five thousand, two hundred forty-two".