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42254023 = 723127817
BaseRepresentation
bin1010000100101…
…1111011000111
32221111201121211
42201023323013
541304112043
64105352251
71022103400
oct241137307
987451554
1042254023
1121940089
1212198687
1389a57a6
14587c9a7
153a99a9d
hex284bec7

42254023 has 12 divisors (see below), whose sum is σ = 50740032. Its totient is φ = 35048160.

The previous prime is 42253973. The next prime is 42254041. The reversal of 42254023 is 32045224.

It is a de Polignac number, because none of the positive numbers 2k-42254023 is a prime.

It is a super-3 number, since 3×422540233 (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42253985 and 42254003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42254053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12390 + ... + 15427.

It is an arithmetic number, because the mean of its divisors is an integer number (4228336).

Almost surely, 242254023 is an apocalyptic number.

42254023 is a deficient number, since it is larger than the sum of its proper divisors (8486009).

42254023 is a wasteful number, since it uses less digits than its factorization.

42254023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27862 (or 27855 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42254023 is about 6500.3094541722. The cubic root of 42254023 is about 348.3020426756.

Adding to 42254023 its reverse (32045224), we get a palindrome (74299247).

It can be divided in two parts, 422 and 54023, that added together give a palindrome (54445).

The spelling of 42254023 in words is "forty-two million, two hundred fifty-four thousand, twenty-three".

Divisors: 1 7 31 49 217 1519 27817 194719 862327 1363033 6036289 42254023