111865427 has 2 divisors, whose sum is σ = 111865428. Its totient is φ = 111865426.

The previous prime is 111865417. The next prime is 111865447. The reversal of 111865427 is 724568111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111865427 - 2⁶ = 111865363 is a prime.

It is not a weakly prime, because it can be changed into another prime (111865417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55932713 + 55932714.

It is an arithmetic number, because the mean of its divisors is an integer number (55932714).

Almost surely, 2^111865427 is an apocalyptic number.

111865427 is a deficient number, since it is larger than the sum of its proper divisors (1).

111865427 is an equidigital number, since it uses as much as digits as its factorization.

111865427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 35.

The square root of 111865427 is about 10576.6453566336. The cubic root of 111865427 is about 481.8353158918.

The spelling of 111865427 in words is "one hundred eleven million, eight hundred sixty-five thousand, four hundred twenty-seven".