1115003421 has 16 divisors (see below), whose sum is σ = 1887836800. Its totient is φ = 637144704.

The previous prime is 1115003413. The next prime is 1115003471. The reversal of 1115003421 is 1243005111.

1115003421 is a `hidden beast` number, since 111 + 500 + 34 + 21 = 666.

It is not a de Polignac number, because 1115003421 - 2³ = 1115003413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1115003394 and 1115003403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115003471) 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, 2949556 + ... + 2949933.

It is an arithmetic number, because the mean of its divisors is an integer number (117989800).

Almost surely, 2^1115003421 is an apocalyptic number.

It is an amenable number.

1115003421 is a deficient number, since it is larger than the sum of its proper divisors (772833379).

1115003421 is an equidigital number, since it uses as much as digits as its factorization.

1115003421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5899505 (or 5899499 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1115003421 is about 33391.6669395225. Note that the first 3 decimals coincide. The cubic root of 1115003421 is about 1036.9521903300.

Adding to 1115003421 its reverse (1243005111), we get a palindrome (2358008532).

It can be divided in two parts, 111500 and 3421, that added together give a square (114921 = 339²).

The spelling of 1115003421 in words is "one billion, one hundred fifteen million, three thousand, four hundred twenty-one".