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142430143 = 1311497297
BaseRepresentation
bin10000111110101…
…00111110111111
3100221000012102111
420133110332333
5242430231033
622044434451
73346431142
oct1037247677
9327005374
10142430143
1173441969
123b848a27
132367b4bb
1414cb8059
15c7867cd
hex87d4fbf

142430143 has 8 divisors (see below), whose sum is σ = 144500400. Its totient is φ = 140375040.

The previous prime is 142430129. The next prime is 142430149. The reversal of 142430143 is 341034241.

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 142430143 - 25 = 142430111 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 (142430149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15871 + ... + 23167.

It is an arithmetic number, because the mean of its divisors is an integer number (18062550).

Almost surely, 2142430143 is an apocalyptic number.

142430143 is a deficient number, since it is larger than the sum of its proper divisors (2070257).

142430143 is a wasteful number, since it uses less digits than its factorization.

142430143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7577.

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

The square root of 142430143 is about 11934.4100398805. The cubic root of 142430143 is about 522.2365977751.

Adding to 142430143 its reverse (341034241), we get a palindrome (483464384).

The spelling of 142430143 in words is "one hundred forty-two million, four hundred thirty thousand, one hundred forty-three".

Divisors: 1 131 149 7297 19519 955907 1087253 142430143