111423420 has 36 divisors (see below), whose sum is σ = 337984920. Its totient is φ = 29712864.

The previous prime is 111423409. The next prime is 111423421. The reversal of 111423420 is 24324111.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111423393 and 111423402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111423421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309330 + ... + 309689.

It is an arithmetic number, because the mean of its divisors is an integer number (9388470).

Almost surely, 2^111423420 is an apocalyptic number.

111423420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111423420 is an abundant number, since it is smaller than the sum of its proper divisors (226561500).

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

111423420 is a wasteful number, since it uses less digits than its factorization.

111423420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619034 (or 619029 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 111423420 is about 10555.7292500329. The cubic root of 111423420 is about 481.1998627703.

Adding to 111423420 its reverse (24324111), we get a palindrome (135747531).

The spelling of 111423420 in words is "one hundred eleven million, four hundred twenty-three thousand, four hundred twenty".