111455442 has 48 divisors (see below), whose sum is σ = 277018560. Its totient is φ = 31725216.

The previous prime is 111455437. The next prime is 111455467. The reversal of 111455442 is 244554111.

111455442 is a `hidden beast` number, since 1 + 114 + 5 + 544 + 2 = 666.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 35409 + ... + 38427.

It is an arithmetic number, because the mean of its divisors is an integer number (5771220).

Almost surely, 2^111455442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111455442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138509280).

111455442 is an abundant number, since it is smaller than the sum of its proper divisors (165563118).

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

111455442 is a wasteful number, since it uses less digits than its factorization.

111455442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327 (or 3324 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 111455442 is about 10557.2459476892. The cubic root of 111455442 is about 481.2459557315.

The spelling of 111455442 in words is "one hundred eleven million, four hundred fifty-five thousand, four hundred forty-two".