111742087 has 2 divisors, whose sum is σ = 111742088. Its totient is φ = 111742086.

The previous prime is 111742063. The next prime is 111742117. The reversal of 111742087 is 780247111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111742087 - 2¹¹ = 111740039 is a prime.

It is a Chen prime.

It is equal to p_6397114 and since 111742087 and 6397114 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111740087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55871043 + 55871044.

It is an arithmetic number, because the mean of its divisors is an integer number (55871044).

Almost surely, 2^111742087 is an apocalyptic number.

111742087 is a deficient number, since it is larger than the sum of its proper divisors (1).

111742087 is an equidigital number, since it uses as much as digits as its factorization.

111742087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 111742087 is about 10570.8129772501. The cubic root of 111742087 is about 481.6581642770.

Adding to 111742087 its reverse (780247111), we get a palindrome (891989198).

The spelling of 111742087 in words is "one hundred eleven million, seven hundred forty-two thousand, eighty-seven".