42812643930 has 128 divisors (see below), whose sum is σ = 121610059776. Its totient is φ = 9439372800.

The previous prime is 42812643901. The next prime is 42812643967. The reversal of 42812643930 is 3934621824.

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

It is a Curzon 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, 2027125 + ... + 2048135.

It is an arithmetic number, because the mean of its divisors is an integer number (950078592).

Almost surely, 2^42812643930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42812643930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60805029888).

42812643930 is an abundant number, since it is smaller than the sum of its proper divisors (78797415846).

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

42812643930 is a wasteful number, since it uses less digits than its factorization.

42812643930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21372.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 42812643930 in words is "forty-two billion, eight hundred twelve million, six hundred forty-three thousand, nine hundred thirty".