5129142720 has 448 divisors, whose sum is σ = 18734714880. Its totient is φ = 1178468352.

The previous prime is 5129142637. The next prime is 5129142749. The reversal of 5129142720 is 272419215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23000529 + ... + 23000751.

It is an arithmetic number, because the mean of its divisors is an integer number (41818560).

Almost surely, 2^5129142720 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 5129142720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9367357440).

5129142720 is an abundant number, since it is smaller than the sum of its proper divisors (13605572160).

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

5129142720 is a wasteful number, since it uses less digits than its factorization.

5129142720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 5129142720 is about 71618.0334831947. The cubic root of 5129142720 is about 1724.5730478736.

The spelling of 5129142720 in words is "five billion, one hundred twenty-nine million, one hundred forty-two thousand, seven hundred twenty".