1111542 has 16 divisors (see below), whose sum is σ = 2260272. Its totient is φ = 364320.

The previous prime is 1111531. The next prime is 1111543. The reversal of 1111542 is 2451111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153 + ... + 1884.

It is an arithmetic number, because the mean of its divisors is an integer number (141267).

2^1111542 is an apocalyptic number.

1111542 is an abundant number, since it is smaller than the sum of its proper divisors (1148730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111542 is a wasteful number, since it uses less digits than its factorization.

1111542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103.

The product of its digits is 40, while the sum is 15.

The square root of 1111542 is about 1054.2969221239. The cubic root of 1111542 is about 103.5878038544.

Adding to 1111542 its reverse (2451111), we get a palindrome (3562653).

It can be divided in two parts, 111154 and 2, that added together give a triangular number (111156 = T₄₇₁).

The spelling of 1111542 in words is "one million, one hundred eleven thousand, five hundred forty-two".