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142270473 = 31671991427
BaseRepresentation
bin10000111101011…
…10000000001001
3100220201002101210
420132232000021
5242410123343
622041203333
73345164502
oct1036560011
9326632353
10142270473
1173342a04
123b790549
1323623917
1414c75ba9
15c754333
hex87ae009

142270473 has 16 divisors (see below), whose sum is σ = 191923200. Its totient is φ = 93739536.

The previous prime is 142270441. The next prime is 142270477. The reversal of 142270473 is 374072241.

It is not a de Polignac number, because 142270473 - 25 = 142270441 is a prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 142270473.

It is not an unprimeable number, because it can be changed into a prime (142270477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98986 + ... + 100412.

It is an arithmetic number, because the mean of its divisors is an integer number (11995200).

Almost surely, 2142270473 is an apocalyptic number.

It is an amenable number.

142270473 is a deficient number, since it is larger than the sum of its proper divisors (49652727).

142270473 is a wasteful number, since it uses less digits than its factorization.

142270473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796.

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 142270473 is about 11927.7186838054. The cubic root of 142270473 is about 522.0413752967.

The spelling of 142270473 in words is "one hundred forty-two million, two hundred seventy thousand, four hundred seventy-three".

Divisors: 1 3 167 199 501 597 1427 4281 33233 99699 238309 283973 714927 851919 47423491 142270473