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300422143 = 742917449
BaseRepresentation
bin10001111010000…
…001001111111111
3202221022000201001
4101322001033333
51103402002033
645451031131
710305355210
oct2172011777
9687260631
10300422143
1114464266a
128473b4a7
134a317ca8
142bc83407
151b593e7d
hex11e813ff

300422143 has 4 divisors (see below), whose sum is σ = 343339600. Its totient is φ = 257504688.

The previous prime is 300422131. The next prime is 300422153. The reversal of 300422143 is 341224003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341224003 = 478371341.

It is not a de Polignac number, because 300422143 - 29 = 300421631 is a prime.

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 300422143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (300422153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21458718 + ... + 21458731.

It is an arithmetic number, because the mean of its divisors is an integer number (85834900).

Almost surely, 2300422143 is an apocalyptic number.

300422143 is a deficient number, since it is larger than the sum of its proper divisors (42917457).

300422143 is an equidigital number, since it uses as much as digits as its factorization.

300422143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42917456.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 300422143 is about 17332.6900104975. The cubic root of 300422143 is about 669.7467989557.

Adding to 300422143 its reverse (341224003), we get a palindrome (641646146).

The spelling of 300422143 in words is "three hundred million, four hundred twenty-two thousand, one hundred forty-three".

Divisors: 1 7 42917449 300422143