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42015253211 = 1721319110221
BaseRepresentation
bin100111001000010011…
…011110001011011011
311000110010010000012022
4213020103132023123
51142021401100321
631145044405055
73015114521411
oct471023361333
9130403100168
1042015253211
1116900573668
1281869a678b
133c6773a599
1420680b72b1
15115d8addab
hex9c84de2db

42015253211 has 12 divisors (see below), whose sum is σ = 44666363280. Its totient is φ = 39513429120.

The previous prime is 42015253199. The next prime is 42015253213. The reversal of 42015253211 is 11235251024.

It is not a de Polignac number, because 42015253211 - 214 = 42015236827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42015253213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326081 + ... + 436301.

It is an arithmetic number, because the mean of its divisors is an integer number (3722196940).

Almost surely, 242015253211 is an apocalyptic number.

42015253211 is a deficient number, since it is larger than the sum of its proper divisors (2651110069).

42015253211 is a wasteful number, since it uses less digits than its factorization.

42015253211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111574 (or 111557 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 42015253211 in words is "forty-two billion, fifteen million, two hundred fifty-three thousand, two hundred eleven".

Divisors: 1 17 289 1319 22423 110221 381191 1873757 31853869 145381499 2471485483 42015253211