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42531310 = 2519223849
BaseRepresentation
bin1010001000111…
…1100111101110
32222000210222201
42202033213232
541342000220
64115332114
71024336663
oct242174756
988023881
1042531310
112200a448
12122b103a
138a71a73
145911a6a
153b01d0a
hex288f9ee

42531310 has 16 divisors (see below), whose sum is σ = 80586000. Its totient is φ = 16117056.

The previous prime is 42531289. The next prime is 42531311. The reversal of 42531310 is 1313524.

It is a super-2 number, since 2×425313102 = 3617824660632200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42531311) 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, 111735 + ... + 112114.

It is an arithmetic number, because the mean of its divisors is an integer number (5036625).

Almost surely, 242531310 is an apocalyptic number.

42531310 is a deficient number, since it is larger than the sum of its proper divisors (38054690).

42531310 is a wasteful number, since it uses less digits than its factorization.

42531310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223875.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 42531310 is about 6521.6033304702. The cubic root of 42531310 is about 349.0622790146.

Adding to 42531310 its reverse (1313524), we get a palindrome (43844834).

The spelling of 42531310 in words is "forty-two million, five hundred thirty-one thousand, three hundred ten".

Divisors: 1 2 5 10 19 38 95 190 223849 447698 1119245 2238490 4253131 8506262 21265655 42531310