111420420 has 48 divisors (see below), whose sum is σ = 312446400. Its totient is φ = 29667456.

The previous prime is 111420401. The next prime is 111420437. The reversal of 111420420 is 24024111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111420420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64731 + ... + 66429.

It is an arithmetic number, because the mean of its divisors is an integer number (6509300).

Almost surely, 2^111420420 is an apocalyptic number.

111420420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111420420 is an abundant number, since it is smaller than the sum of its proper divisors (201025980).

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

111420420 is a wasteful number, since it uses less digits than its factorization.

111420420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804 (or 2802 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 111420420 is about 10555.5871461516. The cubic root of 111420420 is about 481.1955440716.

Adding to 111420420 its reverse (24024111), we get a palindrome (135444531).

The spelling of 111420420 in words is "one hundred eleven million, four hundred twenty thousand, four hundred twenty".