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142542633 = 349099679
BaseRepresentation
bin10000111111100…
…00011100101001
3100221012220201210
420133300130221
5242442331013
622051103333
73350410122
oct1037603451
9327186653
10142542633
1173509432
123b8a1b49
13236ba76c
1414d07049
15c7a9cc3
hex87f0729

142542633 has 8 divisors (see below), whose sum is σ = 190115200. Its totient is φ = 94999248.

The previous prime is 142542593. The next prime is 142542689. The reversal of 142542633 is 336245241.

142542633 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 not a de Polignac number, because 142542633 - 29 = 142542121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142542633.

It is not an unprimeable number, because it can be changed into a prime (142542733) 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, 9888 + ... + 19566.

It is an arithmetic number, because the mean of its divisors is an integer number (23764400).

Almost surely, 2142542633 is an apocalyptic number.

It is an amenable number.

142542633 is a deficient number, since it is larger than the sum of its proper divisors (47572567).

142542633 is an equidigital number, since it uses as much as digits as its factorization.

142542633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14591.

The product of its digits is 17280, while the sum is 30.

The square root of 142542633 is about 11939.1219526396. The cubic root of 142542633 is about 522.3740474624.

Adding to 142542633 its reverse (336245241), we get a palindrome (478787874).

The spelling of 142542633 in words is "one hundred forty-two million, five hundred forty-two thousand, six hundred thirty-three".

Divisors: 1 3 4909 9679 14727 29037 47514211 142542633