1155340142 has 16 divisors (see below), whose sum is σ = 1897247232. Its totient is φ = 523296120.

The previous prime is 1155340079. The next prime is 1155340157. The reversal of 1155340142 is 2410435511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86558 + ... + 99009.

It is an arithmetic number, because the mean of its divisors is an integer number (118577952).

Almost surely, 2^1155340142 is an apocalyptic number.

1155340142 is a deficient number, since it is larger than the sum of its proper divisors (741907090).

1155340142 is a wasteful number, since it uses less digits than its factorization.

1155340142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185863.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1155340142 is about 33990.2948207279. The cubic root of 1155340142 is about 1049.3087338190.

Adding to 1155340142 its reverse (2410435511), we get a palindrome (3565775653).

The spelling of 1155340142 in words is "one billion, one hundred fifty-five million, three hundred forty thousand, one hundred forty-two".