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42650213 = 295327749
BaseRepresentation
bin1010001010110…
…0101001100101
32222020212002112
42202230221211
541404301323
64122050405
71025343434
oct242545145
988225075
1042650213
1122090811
1212349a05
138ab3c18
14594311b
153b27178
hex28aca65

42650213 has 8 divisors (see below), whose sum is σ = 44955000. Its totient is φ = 40401088.

The previous prime is 42650191. The next prime is 42650227. The reversal of 42650213 is 31205624.

It can be written as a sum of positive squares in 4 ways, for example, as 6385729 + 36264484 = 2527^2 + 6022^2 .

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-42650213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42650273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12338 + ... + 15411.

It is an arithmetic number, because the mean of its divisors is an integer number (5619375).

Almost surely, 242650213 is an apocalyptic number.

It is an amenable number.

42650213 is a deficient number, since it is larger than the sum of its proper divisors (2304787).

42650213 is a wasteful number, since it uses less digits than its factorization.

42650213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27831.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 42650213 is about 6530.7130544834. The cubic root of 42650213 is about 349.3872626139.

Adding to 42650213 its reverse (31205624), we get a palindrome (73855837).

The spelling of 42650213 in words is "forty-two million, six hundred fifty thousand, two hundred thirteen".

Divisors: 1 29 53 1537 27749 804721 1470697 42650213