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142432230 = 2354747741
BaseRepresentation
bin10000111110101…
…01011111100110
3100221000022021210
420133111133212
5242430312410
622044452250
73346440213
oct1037253746
9327008253
10142432230
1173443496
123b84a086
132367c435
1414cb8b0a
15c787220
hex87d57e6

142432230 has 16 divisors (see below), whose sum is σ = 341837424. Its totient is φ = 37981920.

The previous prime is 142432223. The next prime is 142432247. The reversal of 142432230 is 32234241.

It is a junction number, because it is equal to n+sod(n) for n = 142432197 and 142432206.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2373841 + ... + 2373900.

It is an arithmetic number, because the mean of its divisors is an integer number (21364839).

Almost surely, 2142432230 is an apocalyptic number.

142432230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142432230 is an abundant number, since it is smaller than the sum of its proper divisors (199405194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142432230 is a wasteful number, since it uses less digits than its factorization.

142432230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4747751.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 142432230 is about 11934.4974758052. The cubic root of 142432230 is about 522.2391485049.

Adding to 142432230 its reverse (32234241), we get a palindrome (174666471).

The spelling of 142432230 in words is "one hundred forty-two million, four hundred thirty-two thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 4747741 9495482 14243223 23738705 28486446 47477410 71216115 142432230