111242406 has 32 divisors (see below), whose sum is σ = 246698496. Its totient is φ = 33156000.

The previous prime is 111242399. The next prime is 111242429. The reversal of 111242406 is 604242111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9790 + ... + 17841.

It is an arithmetic number, because the mean of its divisors is an integer number (7709328).

Almost surely, 2^111242406 is an apocalyptic number.

111242406 is an abundant number, since it is smaller than the sum of its proper divisors (135456090).

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

111242406 is a wasteful number, since it uses less digits than its factorization.

111242406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27708.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 111242406 is about 10547.1515585963. The cubic root of 111242406 is about 480.9391422291.

Adding to 111242406 its reverse (604242111), we get a palindrome (715484517).

It can be divided in two parts, 11124 and 2406, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 111242406 in words is "one hundred eleven million, two hundred forty-two thousand, four hundred six".