111442342420 has 12 divisors (see below), whose sum is σ = 234028919124. Its totient is φ = 44576936960.

The previous prime is 111442342391. The next prime is 111442342481. The reversal of 111442342420 is 24243244111.

It can be written as a sum of positive squares in 2 ways, for example, as 50636700676 + 60805641744 = 225026^2 + 246588^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2786058541 + ... + 2786058580.

It is an arithmetic number, because the mean of its divisors is an integer number (19502409927).

Almost surely, 2^111442342420 is an apocalyptic number.

111442342420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111442342420 is an abundant number, since it is smaller than the sum of its proper divisors (122586576704).

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

111442342420 is a wasteful number, since it uses less digits than its factorization.

111442342420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5572117130 (or 5572117128 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 111442342420 its reverse (24243244111), we get a palindrome (135685586531).

The spelling of 111442342420 in words is "one hundred eleven billion, four hundred forty-two million, three hundred forty-two thousand, four hundred twenty".