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142430393 = 7123116529
BaseRepresentation
bin10000111110101…
…01000010111001
3100221000012202202
420133111002321
5242430233033
622044435545
73346431650
oct1037250271
9327005682
10142430393
1173442076
123b848bb5
132367b651
1414cb8197
15c7868e8
hex87d50b9

142430393 has 8 divisors (see below), whose sum is σ = 162919680. Its totient is φ = 121976640.

The previous prime is 142430359. The next prime is 142430411. The reversal of 142430393 is 393034241.

142430393 is digitally balanced in base 2, 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 cyclic number.

It is not a de Polignac number, because 142430393 - 210 = 142429369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142930393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353 + ... + 16881.

It is an arithmetic number, because the mean of its divisors is an integer number (20364960).

Almost surely, 2142430393 is an apocalyptic number.

It is an amenable number.

142430393 is a deficient number, since it is larger than the sum of its proper divisors (20489287).

142430393 is a wasteful number, since it uses less digits than its factorization.

142430393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17767.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 142430393 is about 11934.4205137912. The cubic root of 142430393 is about 522.2369033262.

The spelling of 142430393 in words is "one hundred forty-two million, four hundred thirty thousand, three hundred ninety-three".

Divisors: 1 7 1231 8617 16529 115703 20347199 142430393