111042125451 has 8 divisors (see below), whose sum is σ = 164506852560. Its totient is φ = 74028083616.

The previous prime is 111042125413. The next prime is 111042125507. The reversal of 111042125451 is 154521240111.

111042125451 is a `hidden beast` number, since 1 + 1 + 104 + 2 + 12 + 545 + 1 = 666.

It is not a de Polignac number, because 111042125451 - 2⁷ = 111042125323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4112671313 = 111042125451 / (1 + 1 + 1 + 0 + 4 + 2 + 1 + 2 + 5 + 4 + 5 + 1).

It is not an unprimeable number, because it can be changed into a prime (111042125401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2056335630 + ... + 2056335683.

It is an arithmetic number, because the mean of its divisors is an integer number (20563356570).

Almost surely, 2^111042125451 is an apocalyptic number.

111042125451 is a deficient number, since it is larger than the sum of its proper divisors (53464727109).

111042125451 is an equidigital number, since it uses as much as digits as its factorization.

111042125451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112671322 (or 4112671316 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

Adding to 111042125451 its reverse (154521240111), we get a palindrome (265563365562).

The spelling of 111042125451 in words is "one hundred eleven billion, forty-two million, one hundred twenty-five thousand, four hundred fifty-one".