1155842 has 8 divisors (see below), whose sum is σ = 1809216. Its totient is φ = 552772.

The previous prime is 1155841. The next prime is 1155851. The reversal of 1155842 is 2485511.

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 (1155841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12518 + ... + 12609.

It is an arithmetic number, because the mean of its divisors is an integer number (226152).

2^1155842 is an apocalyptic number.

1155842 is a deficient number, since it is larger than the sum of its proper divisors (653374).

1155842 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 1155842 = (2151458)₉.

1155842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25152.

The product of its digits is 1600, while the sum is 26.

The square root of 1155842 is about 1075.1009254949. The cubic root of 1155842 is about 104.9460645143.

The spelling of 1155842 in words is "one million, one hundred fifty-five thousand, eight hundred forty-two".