111422420 has 48 divisors (see below), whose sum is σ = 253825488. Its totient is φ = 40919040.

The previous prime is 111422411. The next prime is 111422431. The reversal of 111422420 is 24224111.

It can be written as a sum of positive squares in 8 ways, for example, as 20830096 + 90592324 = 4564^2 + 9518^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9944 + ... + 17936.

It is an arithmetic number, because the mean of its divisors is an integer number (5288031).

Almost surely, 2^111422420 is an apocalyptic number.

111422420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111422420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126912744).

111422420 is an abundant number, since it is smaller than the sum of its proper divisors (142403068).

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

111422420 is a wasteful number, since it uses less digits than its factorization.

111422420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8060 (or 8058 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 111422420 is about 10555.6818822850. The cubic root of 111422420 is about 481.1984232127.

Adding to 111422420 its reverse (24224111), we get a palindrome (135646531).

The spelling of 111422420 in words is "one hundred eleven million, four hundred twenty-two thousand, four hundred twenty".