1115450420 has 48 divisors (see below), whose sum is σ = 2679360768. Its totient is φ = 382114560.

The previous prime is 1115450381. The next prime is 1115450429. The reversal of 1115450420 is 240545111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115450429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208904 + ... + 214176.

It is an arithmetic number, because the mean of its divisors is an integer number (55820016).

Almost surely, 2^1115450420 is an apocalyptic number.

1115450420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115450420 is an abundant number, since it is smaller than the sum of its proper divisors (1563910348).

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

1115450420 is a wasteful number, since it uses less digits than its factorization.

1115450420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6800 (or 6798 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1115450420 is about 33398.3595405523. The cubic root of 1115450420 is about 1037.0907413744.

Adding to 1115450420 its reverse (240545111), we get a palindrome (1355995531).

The spelling of 1115450420 in words is "one billion, one hundred fifteen million, four hundred fifty thousand, four hundred twenty".