7121929320 has 192 divisors, whose sum is σ = 26094600000. Its totient is φ = 1726496640.

The previous prime is 7121929319. The next prime is 7121929327. The reversal of 7121929320 is 239291217.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (7121929327) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103431 + ... + 157929.

It is an arithmetic number, because the mean of its divisors is an integer number (135909375).

Almost surely, 2^7121929320 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 7121929320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13047300000).

7121929320 is an abundant number, since it is smaller than the sum of its proper divisors (18972670680).

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

7121929320 is a wasteful number, since it uses less digits than its factorization.

7121929320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54541 (or 54520 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 7121929320 is about 84391.5239819735. The cubic root of 7121929320 is about 1923.9740928072.

The spelling of 7121929320 in words is "seven billion, one hundred twenty-one million, nine hundred twenty-nine thousand, three hundred twenty".