42947147136 has 128 divisors (see below), whose sum is σ = 117158146560. Its totient is φ = 13932656640.

The previous prime is 42947147129. The next prime is 42947147147. The reversal of 42947147136 is 63174174924.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 3260115 + ... + 3273261.

It is an arithmetic number, because the mean of its divisors is an integer number (915298020).

Almost surely, 2^42947147136 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 42947147136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58579073280).

42947147136 is an abundant number, since it is smaller than the sum of its proper divisors (74210999424).

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

42947147136 is a wasteful number, since it uses less digits than its factorization.

42947147136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13392 (or 13380 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The spelling of 42947147136 in words is "forty-two billion, nine hundred forty-seven million, one hundred forty-seven thousand, one hundred thirty-six".