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68142095 = 57339733
BaseRepresentation
bin1000000111111…
…00010000001111
311202012222101022
410003330100033
5114421021340
610432304355
71455125000
oct403742017
9152188338
1068142095
113551218a
121a9a20bb
131116ac88
14909b1a7
155eb03b5
hex40fc40f

68142095 has 16 divisors (see below), whose sum is σ = 95361600. Its totient is φ = 46724832.

The previous prime is 68142089. The next prime is 68142121. The reversal of 68142095 is 59024186.

It is not a de Polignac number, because 68142095 - 212 = 68137999 is a prime.

It is a super-2 number, since 2×681420952 = 9286690221978050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18152 + ... + 21581.

It is an arithmetic number, because the mean of its divisors is an integer number (5960100).

Almost surely, 268142095 is an apocalyptic number.

68142095 is a deficient number, since it is larger than the sum of its proper divisors (27219505).

68142095 is an equidigital number, since it uses as much as digits as its factorization.

68142095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39759 (or 39745 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 68142095 is about 8254.8225298912. The cubic root of 68142095 is about 408.4496176753.

The spelling of 68142095 in words is "sixty-eight million, one hundred forty-two thousand, ninety-five".

Divisors: 1 5 7 35 49 245 343 1715 39733 198665 278131 1390655 1946917 9734585 13628419 68142095