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142788382 = 211191133023
BaseRepresentation
bin10001000001011…
…00011100011110
3100221200101211121
420200230130132
5243023212012
622100241154
73352452442
oct1040543436
9327611747
10142788382
1173667030
123b9a01ba
1323775589
1414d6c822
15c807a07
hex882c71e

142788382 has 32 divisors (see below), whose sum is σ = 248209920. Its totient is φ = 60923520.

The previous prime is 142788379. The next prime is 142788383. The reversal of 142788382 is 283887241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142788383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45723 + ... + 48745.

It is an arithmetic number, because the mean of its divisors is an integer number (7756560).

Almost surely, 2142788382 is an apocalyptic number.

142788382 is a deficient number, since it is larger than the sum of its proper divisors (105421538).

142788382 is a wasteful number, since it uses less digits than its factorization.

142788382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168.

The product of its digits is 172032, while the sum is 43.

The square root of 142788382 is about 11949.4092741022. The cubic root of 142788382 is about 522.6740727821.

The spelling of 142788382 in words is "one hundred forty-two million, seven hundred eighty-eight thousand, three hundred eighty-two".

Divisors: 1 2 11 19 22 38 113 209 226 418 1243 2147 2486 3023 4294 6046 23617 33253 47234 57437 66506 114874 341599 631807 683198 1263614 3757589 6490381 7515178 12980762 71394191 142788382