1005342500 has 30 divisors (see below), whose sum is σ = 2198488446. Its totient is φ = 402136000.

The previous prime is 1005342473. The next prime is 1005342529. The reversal of 1005342500 is 52435001.

It can be written as a sum of positive squares in 5 ways, for example, as 716954176 + 288388324 = 26776^2 + 16982^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 198569 + ... + 203568.

Almost surely, 2^1005342500 is an apocalyptic number.

1005342500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1005342500 is an abundant number, since it is smaller than the sum of its proper divisors (1193145946).

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

1005342500 is an equidigital number, since it uses as much as digits as its factorization.

1005342500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402161 (or 402144 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1005342500 is about 31707.1364206861. The cubic root of 1005342500 is about 1001.7776713454. Note that the first 3 decimals are identical.

Adding to 1005342500 its reverse (52435001), we get a palindrome (1057777501).

The spelling of 1005342500 in words is "one billion, five million, three hundred forty-two thousand, five hundred".