1113553420 has 72 divisors (see below), whose sum is σ = 2727723600. Its totient is φ = 380741760.

The previous prime is 1113553417. The next prime is 1113553423. The reversal of 1113553420 is 243553111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1113553417) and next prime (1113553423).

It is not an unprimeable number, because it can be changed into a prime (1113553423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411231 + ... + 413929.

It is an arithmetic number, because the mean of its divisors is an integer number (37885050).

Almost surely, 2^1113553420 is an apocalyptic number.

1113553420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1113553420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1363861800).

1113553420 is an abundant number, since it is smaller than the sum of its proper divisors (1614170180).

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

1113553420 is a wasteful number, since it uses less digits than its factorization.

1113553420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143 (or 3134 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1113553420 is about 33369.9478573162. The cubic root of 1113553420 is about 1036.5024954588.

The spelling of 1113553420 in words is "one billion, one hundred thirteen million, five hundred fifty-three thousand, four hundred twenty".