42642228730 has 16 divisors (see below), whose sum is σ = 78014308104. Its totient is φ = 16777270080.

The previous prime is 42642228721. The next prime is 42642228731. The reversal of 42642228730 is 3782224624.

It can be written as a sum of positive squares in 4 ways, for example, as 21616938729 + 21025290001 = 147027^2 + 145001^2 .

It is not an unprimeable number, because it can be changed into a prime (42642228731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34952037 + ... + 34953256.

Almost surely, 2^42642228730 is an apocalyptic number.

42642228730 is a deficient number, since it is larger than the sum of its proper divisors (35372079374).

42642228730 is a wasteful number, since it uses less digits than its factorization.

42642228730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69905361.

The product of its (nonzero) digits is 258048, while the sum is 40.

The spelling of 42642228730 in words is "forty-two billion, six hundred forty-two million, two hundred twenty-eight thousand, seven hundred thirty".