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142441130 = 25131764453
BaseRepresentation
bin10000111110101…
…11101010101010
3100221000202111102
420133113222222
5242431104010
622045001402
73346505156
oct1037275252
9327022442
10142441130
117344a147
123b853262
13236834c0
1414cbc066
15c789ba5
hex87d7aaa

142441130 has 32 divisors (see below), whose sum is σ = 292363344. Its totient is φ = 49499136.

The previous prime is 142441109. The next prime is 142441171. The reversal of 142441130 is 31144241.

It can be written as a sum of positive squares in 8 ways, for example, as 11498881 + 130942249 = 3391^2 + 11443^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30017 + ... + 34436.

Almost surely, 2142441130 is an apocalyptic number.

142441130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142441130 is an abundant number, since it is smaller than the sum of its proper divisors (149922214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142441130 is a wasteful number, since it uses less digits than its factorization.

142441130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64490.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 142441130 is about 11934.8703386338. The cubic root of 142441130 is about 522.2500257987.

Adding to 142441130 its reverse (31144241), we get a palindrome (173585371).

The spelling of 142441130 in words is "one hundred forty-two million, four hundred forty-one thousand, one hundred thirty".

Divisors: 1 2 5 10 13 17 26 34 65 85 130 170 221 442 1105 2210 64453 128906 322265 644530 837889 1095701 1675778 2191402 4189445 5478505 8378890 10957010 14244113 28488226 71220565 142441130