1005421436 has 6 divisors (see below), whose sum is σ = 1759487520. Its totient is φ = 502710716.

The previous prime is 1005421421. The next prime is 1005421441. The reversal of 1005421436 is 6341245001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125677676 + ... + 125677683.

It is an arithmetic number, because the mean of its divisors is an integer number (293247920).

Almost surely, 2^1005421436 is an apocalyptic number.

It is an amenable number.

1005421436 is a deficient number, since it is larger than the sum of its proper divisors (754066084).

1005421436 is a wasteful number, since it uses less digits than its factorization.

1005421436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251355363 (or 251355361 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1005421436 is about 31708.3811633454. The cubic root of 1005421436 is about 1001.8038893599.

Adding to 1005421436 its reverse (6341245001), we get a palindrome (7346666437).

The spelling of 1005421436 in words is "one billion, five million, four hundred twenty-one thousand, four hundred thirty-six".