111272409 has 12 divisors (see below), whose sum is σ = 161179200. Its totient is φ = 73972824.

The previous prime is 111272393. The next prime is 111272443. The reversal of 111272409 is 904272111.

It is not a de Polignac number, because 111272409 - 2⁴ = 111272393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111272489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13989 + ... + 20450.

It is an arithmetic number, because the mean of its divisors is an integer number (13431600).

Almost surely, 2^111272409 is an apocalyptic number.

It is an amenable number.

111272409 is a deficient number, since it is larger than the sum of its proper divisors (49906791).

111272409 is a wasteful number, since it uses less digits than its factorization.

111272409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34804 (or 34801 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 111272409 is about 10548.5737898542. The cubic root of 111272409 is about 480.9823761017.

The spelling of 111272409 in words is "one hundred eleven million, two hundred seventy-two thousand, four hundred nine".