42943191390 has 128 divisors (see below), whose sum is σ = 125074160640. Its totient is φ = 10398096000.

The previous prime is 42943191383. The next prime is 42943191391. The reversal of 42943191390 is 9319134924.

42943191390 is a `hidden beast` number, since 42 + 9 + 431 + 91 + 3 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42943191391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2626240 + ... + 2642540.

It is an arithmetic number, because the mean of its divisors is an integer number (977141880).

Almost surely, 2^42943191390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42943191390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62537080320).

42943191390 is an abundant number, since it is smaller than the sum of its proper divisors (82130969250).

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

42943191390 is a wasteful number, since it uses less digits than its factorization.

42943191390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17215 (or 17209 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 42943191390 in words is "forty-two billion, nine hundred forty-three million, one hundred ninety-one thousand, three hundred ninety".