111980426 has 16 divisors (see below), whose sum is σ = 178462440. Its totient is φ = 52597440.

The previous prime is 111980413. The next prime is 111980437. The reversal of 111980426 is 624089111.

It can be written as a sum of positive squares in 4 ways, for example, as 96020401 + 15960025 = 9799^2 + 3995^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111980392 and 111980401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23945 + ... + 28236.

Almost surely, 2^111980426 is an apocalyptic number.

111980426 is a deficient number, since it is larger than the sum of its proper divisors (66482014).

111980426 is a wasteful number, since it uses less digits than its factorization.

111980426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52249.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 111980426 is about 10582.0804192748. The cubic root of 111980426 is about 482.0003701724. Note that the first 3 decimals are identical.

The spelling of 111980426 in words is "one hundred eleven million, nine hundred eighty thousand, four hundred twenty-six".