111342547 has 2 divisors, whose sum is σ = 111342548. Its totient is φ = 111342546.

The previous prime is 111342487. The next prime is 111342557. The reversal of 111342547 is 745243111.

It is a strong prime.

It is an emirp because it is prime and its reverse (745243111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111342547 - 2⁷ = 111342419 is a prime.

It is not a weakly prime, because it can be changed into another prime (111342557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55671273 + 55671274.

It is an arithmetic number, because the mean of its divisors is an integer number (55671274).

Almost surely, 2^111342547 is an apocalyptic number.

111342547 is a deficient number, since it is larger than the sum of its proper divisors (1).

111342547 is an equidigital number, since it uses as much as digits as its factorization.

111342547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 111342547 is about 10551.8977913928. The cubic root of 111342547 is about 481.0834135965.

Adding to 111342547 its reverse (745243111), we get a palindrome (856585658).

It can be divided in two parts, 1113 and 42547, that added together give a triangular number (43660 = T₂₉₅).

The spelling of 111342547 in words is "one hundred eleven million, three hundred forty-two thousand, five hundred forty-seven".