7130021000 has 128 divisors (see below), whose sum is σ = 17763688800. Its totient is φ = 2669363200.

The previous prime is 7130020969. The next prime is 7130021011. The reversal of 7130021000 is 1200317.

It can be written as a sum of positive squares in 16 ways, for example, as 114618436 + 7015402564 = 10706^2 + 83758^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3347936 + ... + 3350064.

Almost surely, 2^7130021000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7130021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8881844400).

7130021000 is an abundant number, since it is smaller than the sum of its proper divisors (10633667800).

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

7130021000 is a wasteful number, since it uses less digits than its factorization.

7130021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364 (or 2350 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 7130021000 is about 84439.4516798872. The cubic root of 7130021000 is about 1924.7024670863.

Adding to 7130021000 its reverse (1200317), we get a palindrome (7131221317).

The spelling of 7130021000 in words is "seven billion, one hundred thirty million, twenty-one thousand".