111742045 has 4 divisors (see below), whose sum is σ = 134090460. Its totient is φ = 89393632.

The previous prime is 111742039. The next prime is 111742061. The reversal of 111742045 is 540247111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540247111 = 557 ⋅969923.

It can be written as a sum of positive squares in 2 ways, for example, as 21511044 + 90231001 = 4638^2 + 9499^2 .

It is a cyclic number.

It is not a de Polignac number, because 111742045 - 2⁹ = 111741533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11174200 + ... + 11174209.

It is an arithmetic number, because the mean of its divisors is an integer number (33522615).

Almost surely, 2^111742045 is an apocalyptic number.

It is an amenable number.

111742045 is a deficient number, since it is larger than the sum of its proper divisors (22348415).

111742045 is an equidigital number, since it uses as much as digits as its factorization.

111742045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22348414.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 111742045 is about 10570.8109906478. The cubic root of 111742045 is about 481.6581039307.

Adding to 111742045 its reverse (540247111), we get a palindrome (651989156).

The spelling of 111742045 in words is "one hundred eleven million, seven hundred forty-two thousand, forty-five".