1155542 has 16 divisors (see below), whose sum is σ = 1866240. Its totient is φ = 534888.

The previous prime is 1155529. The next prime is 1155569. The reversal of 1155542 is 2455511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1463 + ... + 2109.

It is an arithmetic number, because the mean of its divisors is an integer number (116640).

2^1155542 is an apocalyptic number.

1155542 is a deficient number, since it is larger than the sum of its proper divisors (710698).

1155542 is a wasteful number, since it uses less digits than its factorization.

1155542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715.

The product of its digits is 1000, while the sum is 23.

The square root of 1155542 is about 1074.9613946556. The cubic root of 1155542 is about 104.9369841084.

The spelling of 1155542 in words is "one million, one hundred fifty-five thousand, five hundred forty-two".