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142234213 = 1129344131
BaseRepresentation
bin10000111101001…
…01001001100101
3100220122020122211
420132211021211
5242402443323
622040323421
73344654002
oct1036451145
9326566584
10142234213
1173318740
123b773571
1323610274
1414c668a9
15c74870d
hex87a5265

142234213 has 8 divisors (see below), whose sum is σ = 155697696. Its totient is φ = 128859600.

The previous prime is 142234201. The next prime is 142234217. The reversal of 142234213 is 312432241.

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

It is a cyclic number.

It is not a de Polignac number, because 142234213 - 25 = 142234181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142234217) 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 7 ways as a sum of consecutive naturals, for example, 18843 + ... + 25288.

It is an arithmetic number, because the mean of its divisors is an integer number (19462212).

Almost surely, 2142234213 is an apocalyptic number.

It is an amenable number.

142234213 is a deficient number, since it is larger than the sum of its proper divisors (13463483).

142234213 is a wasteful number, since it uses less digits than its factorization.

142234213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44435.

The product of its digits is 1152, while the sum is 22.

The square root of 142234213 is about 11926.1985980446. The cubic root of 142234213 is about 521.9970212148.

Adding to 142234213 its reverse (312432241), we get a palindrome (454666454).

The spelling of 142234213 in words is "one hundred forty-two million, two hundred thirty-four thousand, two hundred thirteen".

Divisors: 1 11 293 3223 44131 485441 12930383 142234213