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142541757 = 3229546137
BaseRepresentation
bin10000111111100…
…00001110111101
3100221012212112100
420133300032331
5242442314012
622051055313
73350404431
oct1037601675
9327185470
10142541757
1173508806
123b8a1539
13236ba247
1414d069c1
15c7a98dc
hex87f03bd

142541757 has 12 divisors (see below), whose sum is σ = 212993820. Its totient is φ = 91750848.

The previous prime is 142541747. The next prime is 142541761. The reversal of 142541757 is 757145241.

142541757 is a `hidden beast` number, since 1 + 42 + 541 + 75 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 122345721 + 20196036 = 11061^2 + 4494^2 .

It is not a de Polignac number, because 142541757 - 216 = 142476221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142541747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272808 + ... + 273329.

It is an arithmetic number, because the mean of its divisors is an integer number (17749485).

Almost surely, 2142541757 is an apocalyptic number.

It is an amenable number.

142541757 is a deficient number, since it is larger than the sum of its proper divisors (70452063).

142541757 is a wasteful number, since it uses less digits than its factorization.

142541757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546172 (or 546169 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 142541757 is about 11939.0852664683. The cubic root of 142541757 is about 522.3729773718.

Adding to 142541757 its reverse (757145241), we get a palindrome (899686998).

The spelling of 142541757 in words is "one hundred forty-two million, five hundred forty-one thousand, seven hundred fifty-seven".

Divisors: 1 3 9 29 87 261 546137 1638411 4915233 15837973 47513919 142541757