1005243000 has 64 divisors (see below), whose sum is σ = 3136367520. Its totient is φ = 268064000.

The previous prime is 1005242993. The next prime is 1005243059. The reversal of 1005243000 is 3425001.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164541 + ... + 170540.

Almost surely, 2^1005243000 is an apocalyptic number.

1005243000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005243000 is an abundant number, since it is smaller than the sum of its proper divisors (2131124520).

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

1005243000 is a wasteful number, since it uses less digits than its factorization.

1005243000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335105 (or 335091 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1005243000 is about 31705.5673344604. The cubic root of 1005243000 is about 1001.7446211935.

Adding to 1005243000 its reverse (3425001), we get a palindrome (1008668001).

The spelling of 1005243000 in words is "one billion, five million, two hundred forty-three thousand".