111204139 has 2 divisors, whose sum is σ = 111204140. Its totient is φ = 111204138.

The previous prime is 111204073. The next prime is 111204151. The reversal of 111204139 is 931402111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111204139 - 2¹⁹ = 110679851 is a prime.

It is not a weakly prime, because it can be changed into another prime (111204179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55602069 + 55602070.

It is an arithmetic number, because the mean of its divisors is an integer number (55602070).

Almost surely, 2^111204139 is an apocalyptic number.

111204139 is a deficient number, since it is larger than the sum of its proper divisors (1).

111204139 is an equidigital number, since it uses as much as digits as its factorization.

111204139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 111204139 is about 10545.3373108687. The cubic root of 111204139 is about 480.8839887748.

The spelling of 111204139 in words is "one hundred eleven million, two hundred four thousand, one hundred thirty-nine".