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110142881 = 1761106213
BaseRepresentation
bin1101001000010…
…10010110100001
321200020211121222
412210022112201
5211144033011
614532424425
72505125162
oct644122641
9250224558
10110142881
1157199a82
1230a78115
1319a85404
14108b1769
159a09ddb
hex690a5a1

110142881 has 8 divisors (see below), whose sum is σ = 118534824. Its totient is φ = 101963520.

The previous prime is 110142871. The next prime is 110142887. The reversal of 110142881 is 188241011.

It can be written as a sum of positive squares in 4 ways, for example, as 312481 + 109830400 = 559^2 + 10480^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-110142881 is a prime.

It is a super-2 number, since 2×1101428812 = 24262908469960322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 110142881.

It is not an unprimeable number, because it can be changed into a prime (110142887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52070 + ... + 54143.

It is an arithmetic number, because the mean of its divisors is an integer number (14816853).

Almost surely, 2110142881 is an apocalyptic number.

It is an amenable number.

110142881 is a deficient number, since it is larger than the sum of its proper divisors (8391943).

110142881 is a wasteful number, since it uses less digits than its factorization.

110142881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106291.

The product of its (nonzero) digits is 512, while the sum is 26.

The square root of 110142881 is about 10494.8978556249. The cubic root of 110142881 is about 479.3493513608.

Adding to 110142881 its reverse (188241011), we get a palindrome (298383892).

The spelling of 110142881 in words is "one hundred ten million, one hundred forty-two thousand, eight hundred eighty-one".

Divisors: 1 17 61 1037 106213 1805621 6478993 110142881