1091542 has 8 divisors (see below), whose sum is σ = 1647000. Its totient is φ = 542544.

The previous prime is 1091527. The next prime is 1091549. The reversal of 1091542 is 2451901.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167 + ... + 1882.

It is an arithmetic number, because the mean of its divisors is an integer number (205875).

2^1091542 is an apocalyptic number.

1091542 is a deficient number, since it is larger than the sum of its proper divisors (555458).

1091542 is a wasteful number, since it uses less digits than its factorization.

1091542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1091542 is about 1044.7688739621. The cubic root of 1091542 is about 102.9627539946.

The spelling of 1091542 in words is "one million, ninety-one thousand, five hundred forty-two".