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42234231 = 3131278527
BaseRepresentation
bin1010000100011…
…1000101110111
32221110201110210
42201013011313
541302443411
64105120503
71021661604
oct241070567
987421423
1042234231
1121927226
1212189133
138999790
1458756ab
153a93ca6
hex2847177

42234231 has 16 divisors (see below), whose sum is σ = 61128704. Its totient is φ = 25782624.

The previous prime is 42234229. The next prime is 42234251. The reversal of 42234231 is 13243224.

42234231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42234231 - 21 = 42234229 is a prime.

It is a super-2 number, since 2×422342312 = 3567460536322722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42234198 and 42234207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42234251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690 + ... + 9216.

It is an arithmetic number, because the mean of its divisors is an integer number (3820544).

Almost surely, 242234231 is an apocalyptic number.

42234231 is a deficient number, since it is larger than the sum of its proper divisors (18894473).

42234231 is a wasteful number, since it uses less digits than its factorization.

42234231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8670.

The product of its digits is 1152, while the sum is 21.

The square root of 42234231 is about 6498.7868867966. The cubic root of 42234231 is about 348.2476520310.

Adding to 42234231 its reverse (13243224), we get a palindrome (55477455).

The spelling of 42234231 in words is "forty-two million, two hundred thirty-four thousand, two hundred thirty-one".