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142242343 = 516727529
BaseRepresentation
bin10000111101001…
…11001000100111
3100220122122210221
420132213020213
5242403223333
622040425211
73345016465
oct1036471047
9326578727
10142242343
1173323861
123b778207
1323613b89
1414c69835
15c74ad2d
hex87a7227

142242343 has 4 divisors (see below), whose sum is σ = 142275040. Its totient is φ = 142209648.

The previous prime is 142242311. The next prime is 142242367. The reversal of 142242343 is 343242241.

It is a happy number.

142242343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343242241 = 1049327209.

It is a cyclic number.

It is not a de Polignac number, because 142242343 - 25 = 142242311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142222343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8598 + ... + 18931.

It is an arithmetic number, because the mean of its divisors is an integer number (35568760).

Almost surely, 2142242343 is an apocalyptic number.

142242343 is a deficient number, since it is larger than the sum of its proper divisors (32697).

142242343 is an equidigital number, since it uses as much as digits as its factorization.

142242343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32696.

The product of its digits is 4608, while the sum is 25.

The square root of 142242343 is about 11926.5394394183. The cubic root of 142242343 is about 522.0069666769.

Adding to 142242343 its reverse (343242241), we get a palindrome (485484584).

The spelling of 142242343 in words is "one hundred forty-two million, two hundred forty-two thousand, three hundred forty-three".

Divisors: 1 5167 27529 142242343