42940385280 has 576 divisors, whose sum is σ = 165464208000. Its totient is φ = 10558439424.

The previous prime is 42940385207. The next prime is 42940385281. The reversal of 42940385280 is 8258304924.

42940385280 is a `hidden beast` number, since 4 + 2 + 94 + 0 + 38 + 528 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

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

It is not an unprimeable number, because it can be changed into a prime (42940385281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46724661 + ... + 46725579.

It is an arithmetic number, because the mean of its divisors is an integer number (287264250).

Almost surely, 2^42940385280 is an apocalyptic number.

42940385280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42940385280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82732104000).

42940385280 is an abundant number, since it is smaller than the sum of its proper divisors (122523822720).

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

42940385280 is a wasteful number, since it uses less digits than its factorization.

42940385280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 42940385280 in words is "forty-two billion, nine hundred forty million, three hundred eighty-five thousand, two hundred eighty".