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142214830 = 2514221483
BaseRepresentation
bin10000111101000…
…00011010101110
3100220121021001221
420132200122232
5242401333310
622040053554
73344543332
oct1036403256
9326537057
10142214830
117330511a
123b7642ba
13236044b4
1414c5d7c2
15c742ada
hex87a06ae

142214830 has 8 divisors (see below), whose sum is σ = 255986712. Its totient is φ = 56885928.

The previous prime is 142214801. The next prime is 142214837. The reversal of 142214830 is 38412241.

142214830 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 142214795 and 142214804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142214837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7110732 + ... + 7110751.

It is an arithmetic number, because the mean of its divisors is an integer number (31998339).

Almost surely, 2142214830 is an apocalyptic number.

142214830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142214830 is a deficient number, since it is larger than the sum of its proper divisors (113771882).

142214830 is a wasteful number, since it uses less digits than its factorization.

142214830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14221490.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 142214830 is about 11925.3859476329. The cubic root of 142214830 is about 521.9733083830.

The spelling of 142214830 in words is "one hundred forty-two million, two hundred fourteen thousand, eight hundred thirty".

Divisors: 1 2 5 10 14221483 28442966 71107415 142214830