111420423 has 12 divisors (see below), whose sum is σ = 161785728. Its totient is φ = 73890240.

The previous prime is 111420401. The next prime is 111420437. The reversal of 111420423 is 324024111.

It is not a de Polignac number, because 111420423 - 2⁵ = 111420391 is a prime.

It is a super-2 number, since 2×111420423² = 24829021322997858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111420396 and 111420405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111420223) 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, 30690 + ... + 34127.

It is an arithmetic number, because the mean of its divisors is an integer number (13482144).

Almost surely, 2^111420423 is an apocalyptic number.

111420423 is a deficient number, since it is larger than the sum of its proper divisors (50365305).

111420423 is a wasteful number, since it uses less digits than its factorization.

111420423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65014 (or 65011 counting only the distinct ones).

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

The square root of 111420423 is about 10555.5872882564. The cubic root of 111420423 is about 481.1955483903.

Adding to 111420423 its reverse (324024111), we get a palindrome (435444534).

The spelling of 111420423 in words is "one hundred eleven million, four hundred twenty thousand, four hundred twenty-three".