111242440 has 16 divisors (see below), whose sum is σ = 250295580. Its totient is φ = 44496960.

The previous prime is 111242429. The next prime is 111242479. The reversal of 111242440 is 44242111.

It can be written as a sum of positive squares in 2 ways, for example, as 103591684 + 7650756 = 10178^2 + 2766^2 .

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, 1390491 + ... + 1390570.

Almost surely, 2^111242440 is an apocalyptic number.

111242440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111242440 is an abundant number, since it is smaller than the sum of its proper divisors (139053140).

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

111242440 is a wasteful number, since it uses less digits than its factorization.

111242440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781072 (or 2781068 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 111242440 is about 10547.1531704057. The cubic root of 111242440 is about 480.9391912270.

Adding to 111242440 its reverse (44242111), we get a palindrome (155484551).

The spelling of 111242440 in words is "one hundred eleven million, two hundred forty-two thousand, four hundred forty".