1113445420 has 24 divisors (see below), whose sum is σ = 2339876448. Its totient is φ = 445065600.

The previous prime is 1113445409. The next prime is 1113445423. The reversal of 1113445420 is 245443111.

It is not an unprimeable number, because it can be changed into a prime (1113445423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10825 + ... + 48415.

It is an arithmetic number, because the mean of its divisors is an integer number (97494852).

Almost surely, 2^1113445420 is an apocalyptic number.

1113445420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113445420 is an abundant number, since it is smaller than the sum of its proper divisors (1226431028).

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

1113445420 is a wasteful number, since it uses less digits than its factorization.

1113445420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39081 (or 39079 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1113445420 is about 33368.3295955911. The cubic root of 1113445420 is about 1036.4689853500.

Adding to 1113445420 its reverse (245443111), we get a palindrome (1358888531).

The spelling of 1113445420 in words is "one billion, one hundred thirteen million, four hundred forty-five thousand, four hundred twenty".