111238042 has 4 divisors (see below), whose sum is σ = 166857066. Its totient is φ = 55619020.

The previous prime is 111238037. The next prime is 111238079. The reversal of 111238042 is 240832111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240832111 = 13 ⋅18525547.

It can be written as a sum of positive squares in only one way, i.e., 68740681 + 42497361 = 8291^2 + 6519^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27809509 + ... + 27809512.

Almost surely, 2^111238042 is an apocalyptic number.

111238042 is a deficient number, since it is larger than the sum of its proper divisors (55619024).

111238042 is an equidigital number, since it uses as much as digits as its factorization.

111238042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55619023.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 111238042 is about 10546.9446760661. The cubic root of 111238042 is about 480.9328531231.

The spelling of 111238042 in words is "one hundred eleven million, two hundred thirty-eight thousand, forty-two".