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42291031230 = 23357212592539
BaseRepresentation
bin100111011000101111…
…011110110010111110
311001011100000222112000
4213120233132302332
51143103000444410
631232255323130
73025003556100
oct473057366276
9131140028460
1042291031230
1116a32203788
1282432204a6
133cac907346
142092983570
151177bd5dc0
hex9d8bdecbe

42291031230 has 192 divisors, whose sum is σ = 131344416000. Its totient is φ = 9655039296.

The previous prime is 42291031229. The next prime is 42291031241. The reversal of 42291031230 is 3213019224.

It is a happy number.

42291031230 is a `hidden beast` number, since 422 + 9 + 1 + 0 + 3 + 1 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 42291031194 and 42291031203.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 16655301 + ... + 16657839.

It is an arithmetic number, because the mean of its divisors is an integer number (684085500).

Almost surely, 242291031230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42291031230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65672208000).

42291031230 is an abundant number, since it is smaller than the sum of its proper divisors (89053384770).

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

42291031230 is a wasteful number, since it uses less digits than its factorization.

42291031230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828 (or 3815 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 42291031230 in words is "forty-two billion, two hundred ninety-one million, thirty-one thousand, two hundred thirty".