111423740 has 12 divisors (see below), whose sum is σ = 233989896. Its totient is φ = 44569488.

The previous prime is 111423737. The next prime is 111423743. The reversal of 111423740 is 47324111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111423737) and next prime (111423743).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111423743) 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 3 ways as a sum of consecutive naturals, for example, 2785574 + ... + 2785613.

It is an arithmetic number, because the mean of its divisors is an integer number (19499158).

Almost surely, 2^111423740 is an apocalyptic number.

111423740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111423740 is an abundant number, since it is smaller than the sum of its proper divisors (122566156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111423740 is a wasteful number, since it uses less digits than its factorization.

111423740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571196 (or 5571194 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 111423740 is about 10555.7444076673. The cubic root of 111423740 is about 481.2003234269.

Adding to 111423740 its reverse (47324111), we get a palindrome (158747851).

The spelling of 111423740 in words is "one hundred eleven million, four hundred twenty-three thousand, seven hundred forty".