111405102 has 8 divisors (see below), whose sum is σ = 222810216. Its totient is φ = 37135032.

The previous prime is 111405101. The next prime is 111405137. The reversal of 111405102 is 201504111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

111405102 is an admirable number.

It is a super-2 number, since 2×111405102² = 24822193503260808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111405101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9283753 + ... + 9283764.

It is an arithmetic number, because the mean of its divisors is an integer number (27851277).

Almost surely, 2^111405102 is an apocalyptic number.

111405102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

111405102 is a wasteful number, since it uses less digits than its factorization.

111405102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18567522.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 111405102 is about 10554.8615339094. The cubic root of 111405102 is about 481.1734915874.

Adding to 111405102 its reverse (201504111), we get a palindrome (312909213).

Subtracting 111405102 from its reverse (201504111), we obtain a palindrome (90099009).

The spelling of 111405102 in words is "one hundred eleven million, four hundred five thousand, one hundred two".