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42834831 = 3131378017
BaseRepresentation
bin1010001101100…
…1101110001111
32222121020100020
42203121232033
541431203311
64130033223
71030042614
oct243315617
988536306
1042834831
11221a7496
1212418813
138b49c70
14599050b
153b61c06
hex28d9b8f

42834831 has 16 divisors (see below), whose sum is σ = 61963104. Its totient is φ = 26164224.

The previous prime is 42834829. The next prime is 42834851. The reversal of 42834831 is 13843824.

It is not a de Polignac number, because 42834831 - 21 = 42834829 is a prime.

It is a super-2 number, since 2×428348312 = 3669645493597122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42834792 and 42834801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42834811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1335 + ... + 9351.

It is an arithmetic number, because the mean of its divisors is an integer number (3872694).

Almost surely, 242834831 is an apocalyptic number.

42834831 is a deficient number, since it is larger than the sum of its proper divisors (19128273).

42834831 is a wasteful number, since it uses less digits than its factorization.

42834831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170.

The product of its digits is 18432, while the sum is 33.

The square root of 42834831 is about 6544.8323889921. The cubic root of 42834831 is about 349.8906624459.

The spelling of 42834831 in words is "forty-two million, eight hundred thirty-four thousand, eight hundred thirty-one".

Divisors: 1 3 13 39 137 411 1781 5343 8017 24051 104221 312663 1098329 3294987 14278277 42834831