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42540384480 = 25351140919699
BaseRepresentation
bin100111100111100110…
…101100000011100000
311001210201020102212120
4213213212230003200
51144110314300410
631313124024240
73034122205356
oct474746540340
9131721212776
1042540384480
111704aa35550
1282b2832080
13401c481549
1420b7b317d6
15118ea3d570
hex9e79ac0e0

42540384480 has 192 divisors, whose sum is σ = 146549088000. Its totient is φ = 10287083520.

The previous prime is 42540384463. The next prime is 42540384511. The reversal of 42540384480 is 8448304524.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2149671 + ... + 2169369.

It is an arithmetic number, because the mean of its divisors is an integer number (763276500).

Almost surely, 242540384480 is an apocalyptic number.

42540384480 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 42540384480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73274544000).

42540384480 is an abundant number, since it is smaller than the sum of its proper divisors (104008703520).

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

42540384480 is a wasteful number, since it uses less digits than its factorization.

42540384480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20137 (or 20129 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 42.

The spelling of 42540384480 in words is "forty-two billion, five hundred forty million, three hundred eighty-four thousand, four hundred eighty".