111420345 has 16 divisors (see below), whose sum is σ = 179910720. Its totient is φ = 58878144.

The previous prime is 111420341. The next prime is 111420359. The reversal of 111420345 is 543024111.

It is not a de Polignac number, because 111420345 - 2² = 111420341 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111420341) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 32439 + ... + 35708.

It is an arithmetic number, because the mean of its divisors is an integer number (11244420).

Almost surely, 2^111420345 is an apocalyptic number.

111420345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111420345 is a deficient number, since it is larger than the sum of its proper divisors (68490375).

111420345 is a wasteful number, since it uses less digits than its factorization.

111420345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68264.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 111420345 is about 10555.5835935300. The cubic root of 111420345 is about 481.1954361031.

Adding to 111420345 its reverse (543024111), we get a palindrome (654444456).

The spelling of 111420345 in words is "one hundred eleven million, four hundred twenty thousand, three hundred forty-five".