42909478930 has 32 divisors (see below), whose sum is σ = 78865517808. Its totient is φ = 16803321600.

The previous prime is 42909478901. The next prime is 42909478943. The reversal of 42909478930 is 3987490924.

42909478930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 29358423649 + 13551055281 = 171343^2 + 116409^2 .

It is a super-2 number, since 2×42909478930² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156520 + ... + 332140.

Almost surely, 2^42909478930 is an apocalyptic number.

42909478930 is a deficient number, since it is larger than the sum of its proper divisors (35956038878).

42909478930 is a wasteful number, since it uses less digits than its factorization.

42909478930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176142.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 42909478930 in words is "forty-two billion, nine hundred nine million, four hundred seventy-eight thousand, nine hundred thirty".