111403040421403 has 4 divisors (see below), whose sum is σ = 112253445310248. Its totient is φ = 110552635532560.

The previous prime is 111403040421349. The next prime is 111403040421419. The reversal of 111403040421403 is 304124040304111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111403040421403 - 2²⁵ = 111403006866971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111403040421703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425202444226 + ... + 425202444487.

It is an arithmetic number, because the mean of its divisors is an integer number (28063361327562).

Almost surely, 2^{111403040421403} is an apocalyptic number.

111403040421403 is a deficient number, since it is larger than the sum of its proper divisors (850404888845).

111403040421403 is an equidigital number, since it uses as much as digits as its factorization.

111403040421403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850404888844.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 111403040421403 its reverse (304124040304111), we get a palindrome (415527080725514).

The spelling of 111403040421403 in words is "one hundred eleven trillion, four hundred three billion, forty million, four hundred twenty-one thousand, four hundred three".