111663542 has 8 divisors (see below), whose sum is σ = 168464016. Its totient is φ = 55508872.

The previous prime is 111663533. The next prime is 111663547. The reversal of 111663542 is 245366111.

It is a happy number.

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

It is a super-2 number, since 2×111663542² = 24937493223971528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111663547) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 161018 + ... + 161709.

It is an arithmetic number, because the mean of its divisors is an integer number (21058002).

Almost surely, 2^111663542 is an apocalyptic number.

111663542 is a deficient number, since it is larger than the sum of its proper divisors (56800474).

111663542 is a wasteful number, since it uses less digits than its factorization.

111663542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322902.

The product of its digits is 4320, while the sum is 29.

The square root of 111663542 is about 10567.0971415995. The cubic root of 111663542 is about 481.5452831798.

The spelling of 111663542 in words is "one hundred eleven million, six hundred sixty-three thousand, five hundred forty-two".