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142104142 = 2239297289
BaseRepresentation
bin10000111100001…
…01011001001110
3100220101122020101
420132011121032
5242334313032
622033441314
73343602535
oct1036053116
9326348211
10142104142
1173239a44
123b71023a
1323595cbb
1414c3131c
15c71ede7
hex878564e

142104142 has 8 divisors (see below), whose sum is σ = 214048800. Its totient is φ = 70754544.

The previous prime is 142104113. The next prime is 142104181. The reversal of 142104142 is 241401241.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 148167 + ... + 149122.

It is an arithmetic number, because the mean of its divisors is an integer number (26756100).

Almost surely, 2142104142 is an apocalyptic number.

142104142 is a deficient number, since it is larger than the sum of its proper divisors (71944658).

142104142 is a wasteful number, since it uses less digits than its factorization.

142104142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297530.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 142104142 is about 11920.7441881789. The cubic root of 142104142 is about 521.8378532705.

Adding to 142104142 its reverse (241401241), we get a palindrome (383505383).

The spelling of 142104142 in words is "one hundred forty-two million, one hundred four thousand, one hundred forty-two".

Divisors: 1 2 239 478 297289 594578 71052071 142104142