111872403 has 6 divisors (see below), whose sum is σ = 161593484. Its totient is φ = 74581596.

The previous prime is 111872363. The next prime is 111872413. The reversal of 111872403 is 304278111.

It is not a de Polignac number, because 111872403 - 2⁶ = 111872339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111872413) 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 5 ways as a sum of consecutive naturals, for example, 6215125 + ... + 6215142.

Almost surely, 2^111872403 is an apocalyptic number.

111872403 is a deficient number, since it is larger than the sum of its proper divisors (49721081).

111872403 is a wasteful number, since it uses less digits than its factorization.

111872403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12430273 (or 12430270 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 111872403 is about 10576.9751346971. The cubic root of 111872403 is about 481.8453315370.

The spelling of 111872403 in words is "one hundred eleven million, eight hundred seventy-two thousand, four hundred three".