1005404424 has 32 divisors (see below), whose sum is σ = 2537920320. Its totient is φ = 331880256.

The previous prime is 1005404423. The next prime is 1005404453. The reversal of 1005404424 is 4244045001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1005404394 and 1005404403.

It is not an unprimeable number, because it can be changed into a prime (1005404423) 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, 200887 + ... + 205830.

It is an arithmetic number, because the mean of its divisors is an integer number (79310010).

Almost surely, 2^1005404424 is an apocalyptic number.

It is an amenable number.

1005404424 is an abundant number, since it is smaller than the sum of its proper divisors (1532515896).

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

1005404424 is a wasteful number, since it uses less digits than its factorization.

1005404424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406829 (or 406825 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 1005404424 is about 31708.1129050595. The cubic root of 1005404424 is about 1001.7982390646.

Adding to 1005404424 its reverse (4244045001), we get a palindrome (5249449425).

The spelling of 1005404424 in words is "one billion, five million, four hundred four thousand, four hundred twenty-four".