1155342242 has 16 divisors (see below), whose sum is σ = 1783561920. Its totient is φ = 560886768.

The previous prime is 1155342217. The next prime is 1155342247. The reversal of 1155342242 is 2422435511.

It is a super-2 number, since 2×1155342242² = 2669631392299173128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1155342247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20009 + ... + 52067.

It is an arithmetic number, because the mean of its divisors is an integer number (111472620).

Almost surely, 2^1155342242 is an apocalyptic number.

1155342242 is a deficient number, since it is larger than the sum of its proper divisors (628219678).

1155342242 is a wasteful number, since it uses less digits than its factorization.

1155342242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32585.

The product of its digits is 9600, while the sum is 29.

The square root of 1155342242 is about 33990.3257118846. The cubic root of 1155342242 is about 1049.3093695760.

Adding to 1155342242 its reverse (2422435511), we get a palindrome (3577777753).

The spelling of 1155342242 in words is "one billion, one hundred fifty-five million, three hundred forty-two thousand, two hundred forty-two".