1240220112 has 40 divisors (see below), whose sum is σ = 3207086400. Its totient is φ = 412995840.

The previous prime is 1240220101. The next prime is 1240220129. The reversal of 1240220112 is 2110220421.

It is a junction number, because it is equal to n+sod(n) for n = 1240220091 and 1240220100.

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 7 ways as a sum of consecutive naturals, for example, 38037 + ... + 62667.

It is an arithmetic number, because the mean of its divisors is an integer number (80177160).

Almost surely, 2^1240220112 is an apocalyptic number.

1240220112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1240220112 is an abundant number, since it is smaller than the sum of its proper divisors (1966866288).

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

1240220112 is a wasteful number, since it uses less digits than its factorization.

1240220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25691 (or 25685 counting only the distinct ones).

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

The square root of 1240220112 is about 35216.7589650155. The cubic root of 1240220112 is about 1074.4006356370.

Adding to 1240220112 its reverse (2110220421), we get a palindrome (3350440533).

The spelling of 1240220112 in words is "one billion, two hundred forty million, two hundred twenty thousand, one hundred twelve".