7421500000 has 84 divisors (see below), whose sum is σ = 18264844332. Its totient is φ = 2968400000.

The previous prime is 7421499947. The next prime is 7421500001. The reversal of 7421500000 is 51247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7421500001) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 492579 + ... + 507421.

It is an arithmetic number, because the mean of its divisors is an integer number (217438623).

Almost surely, 2^7421500000 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 7421500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9132422166).

7421500000 is an abundant number, since it is smaller than the sum of its proper divisors (10843344332).

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

7421500000 is an frugal number, since it uses more digits than its factorization.

7421500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14883 (or 14850 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 7421500000 is about 86148.1282443211. The cubic root of 7421500000 is about 1950.5805853947.

Adding to 7421500000 its reverse (51247), we get a palindrome (7421551247).

The spelling of 7421500000 in words is "seven billion, four hundred twenty-one million, five hundred thousand".