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142520486 = 21718123159
BaseRepresentation
bin10000111111010…
…11000010100110
3100221011210100112
420133223002212
5242441123421
622050413022
73350255423
oct1037530246
9327153315
10142520486
11734a3829
123b891172
13236b0664
1414cdcd4a
15c7a345b
hex87eb0a6

142520486 has 16 divisors (see below), whose sum is σ = 227616480. Its totient is φ = 66695040.

The previous prime is 142520479. The next prime is 142520507. The reversal of 142520486 is 684025241.

142520486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5426 + ... + 17733.

It is an arithmetic number, because the mean of its divisors is an integer number (14226030).

Almost surely, 2142520486 is an apocalyptic number.

142520486 is a deficient number, since it is larger than the sum of its proper divisors (85095994).

142520486 is a wasteful number, since it uses less digits than its factorization.

142520486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23359.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 142520486 is about 11938.1944195929. The cubic root of 142520486 is about 522.3469921247.

The spelling of 142520486 in words is "one hundred forty-two million, five hundred twenty thousand, four hundred eighty-six".

Divisors: 1 2 17 34 181 362 3077 6154 23159 46318 393703 787406 4191779 8383558 71260243 142520486