111420242 has 8 divisors (see below), whose sum is σ = 167262732. Its totient is φ = 55666000.

The previous prime is 111420223. The next prime is 111420307. The reversal of 111420242 is 242024111.

It can be written as a sum of positive squares in 2 ways, for example, as 69572281 + 41847961 = 8341^2 + 6469^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 111420242.

It is an unprimeable number.

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, 18809 + ... + 24012.

Almost surely, 2^111420242 is an apocalyptic number.

111420242 is a deficient number, since it is larger than the sum of its proper divisors (55842490).

111420242 is a wasteful number, since it uses less digits than its factorization.

111420242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44124.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 111420242 is about 10555.5787145945. The cubic root of 111420242 is about 481.1952878264.

Adding to 111420242 its reverse (242024111), we get a palindrome (353444353).

The spelling of 111420242 in words is "one hundred eleven million, four hundred twenty thousand, two hundred forty-two".