111402042320 has 20 divisors (see below), whose sum is σ = 259009748580. Its totient is φ = 44560816896.

The previous prime is 111402042319. The next prime is 111402042341. The reversal of 111402042320 is 23240204111.

It can be written as a sum of positive squares in 2 ways, for example, as 50013060496 + 61388981824 = 223636^2 + 247768^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 111402042292 and 111402042301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696262685 + ... + 696262844.

It is an arithmetic number, because the mean of its divisors is an integer number (12950487429).

Almost surely, 2^111402042320 is an apocalyptic number.

111402042320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111402042320 is an abundant number, since it is smaller than the sum of its proper divisors (147607706260).

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

111402042320 is a wasteful number, since it uses less digits than its factorization.

111402042320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392525542 (or 1392525536 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 111402042320 its reverse (23240204111), we get a palindrome (134642246431).

The spelling of 111402042320 in words is "one hundred eleven billion, four hundred two million, forty-two thousand, three hundred twenty".