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142424307 = 32291912857
BaseRepresentation
bin10000111110100…
…11100011110011
3100220222220102100
420133103203303
5242430034212
622044351443
73346405134
oct1037234363
9326886370
10142424307
1173438543
123b845583
132367894c
1414cb5c8b
15c784bdc
hex87d38f3

142424307 has 24 divisors (see below), whose sum is σ = 214007040. Its totient is φ = 91163520.

The previous prime is 142424291. The next prime is 142424311. The reversal of 142424307 is 703424241.

It is not a de Polignac number, because 142424307 - 24 = 142424291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142424327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48423 + ... + 51279.

It is an arithmetic number, because the mean of its divisors is an integer number (8916960).

Almost surely, 2142424307 is an apocalyptic number.

142424307 is a deficient number, since it is larger than the sum of its proper divisors (71582733).

142424307 is a wasteful number, since it uses less digits than its factorization.

142424307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083 (or 3080 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 142424307 is about 11934.1655342969. The cubic root of 142424307 is about 522.2294648879.

Adding to 142424307 its reverse (703424241), we get a palindrome (845848548).

The spelling of 142424307 in words is "one hundred forty-two million, four hundred twenty-four thousand, three hundred seven".

Divisors: 1 3 9 29 87 191 261 573 1719 2857 5539 8571 16617 25713 49851 82853 248559 545687 745677 1637061 4911183 15824923 47474769 142424307