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142982031 = 347660677
BaseRepresentation
bin10001000010110…
…11101110001111
3100222001020110210
420201123232033
5243100411111
622104333503
73354220143
oct1041335617
9328036423
10142982031
1173789575
123ba74293
132381276a
1414dbd223
15c8450a6
hex885bb8f

142982031 has 4 divisors (see below), whose sum is σ = 190642712. Its totient is φ = 95321352.

The previous prime is 142982029. The next prime is 142982033. The reversal of 142982031 is 130289241.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (142982029) and next prime (142982033).

It is not a de Polignac number, because 142982031 - 21 = 142982029 is a prime.

It is a super-2 number, since 2×1429820312 = 40887722377769922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142982031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142982033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23830336 + ... + 23830341.

It is an arithmetic number, because the mean of its divisors is an integer number (47660678).

Almost surely, 2142982031 is an apocalyptic number.

142982031 is a deficient number, since it is larger than the sum of its proper divisors (47660681).

142982031 is an equidigital number, since it uses as much as digits as its factorization.

142982031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47660680.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 142982031 is about 11957.5093978638. The cubic root of 142982031 is about 522.9102488365.

The spelling of 142982031 in words is "one hundred forty-two million, nine hundred eighty-two thousand, thirty-one".

Divisors: 1 3 47660677 142982031