42728551530 has 128 divisors (see below), whose sum is σ = 123028512768. Its totient is φ = 9285779712.

The previous prime is 42728551487. The next prime is 42728551543. The reversal of 42728551530 is 3515582724.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 780124 + ... + 833096.

It is an arithmetic number, because the mean of its divisors is an integer number (961160256).

Almost surely, 2^42728551530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42728551530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61514256384).

42728551530 is an abundant number, since it is smaller than the sum of its proper divisors (80299961238).

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

42728551530 is a wasteful number, since it uses less digits than its factorization.

42728551530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53180.

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 42728551530 in words is "forty-two billion, seven hundred twenty-eight million, five hundred fifty-one thousand, five hundred thirty".