111043430042 has 4 divisors (see below), whose sum is σ = 166565145066. Its totient is φ = 55521715020.

The previous prime is 111043430011. The next prime is 111043430077. The reversal of 111043430042 is 240034340111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240034340111 = 23 ⋅10436275657.

It can be written as a sum of positive squares in only one way, i.e., 93220913041 + 17822517001 = 305321^2 + 133501^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27760857509 + ... + 27760857512.

Almost surely, 2^111043430042 is an apocalyptic number.

111043430042 is a deficient number, since it is larger than the sum of its proper divisors (55521715024).

111043430042 is an equidigital number, since it uses as much as digits as its factorization.

111043430042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55521715023.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 111043430042 its reverse (240034340111), we get a palindrome (351077770153).

The spelling of 111043430042 in words is "one hundred eleven billion, forty-three million, four hundred thirty thousand, forty-two".