1006421500 has 48 divisors (see below), whose sum is σ = 2512036800. Its totient is φ = 345057600.

The previous prime is 1006421491. The next prime is 1006421503. The reversal of 1006421500 is 51246001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006421503) 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, 140275 + ... + 147274.

It is an arithmetic number, because the mean of its divisors is an integer number (52334100).

Almost surely, 2^1006421500 is an apocalyptic number.

1006421500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1006421500 is an abundant number, since it is smaller than the sum of its proper divisors (1505615300).

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

1006421500 is a wasteful number, since it uses less digits than its factorization.

1006421500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287575 (or 287563 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1006421500 is about 31724.1469546464. The cubic root of 1006421500 is about 1002.1359345355.

Adding to 1006421500 its reverse (51246001), we get a palindrome (1057667501).

The spelling of 1006421500 in words is "one billion, six million, four hundred twenty-one thousand, five hundred".