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142720127 = 1126094973
BaseRepresentation
bin10001000000110…
…11110001111111
3100221112221012122
420200123301333
5243014021002
622054553155
73352046444
oct1040336177
9327487178
10142720127
117361a820
123b9687bb
13237504a4
1414d519cb
15c7e26a2
hex881bc7f

142720127 has 8 divisors (see below), whose sum is σ = 155785680. Its totient is φ = 129669760.

The previous prime is 142720103. The next prime is 142720147. The reversal of 142720127 is 721027241.

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

It is not a de Polignac number, because 142720127 - 210 = 142719103 is a prime.

It is a super-2 number, since 2×1427201272 = 40738069301792258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142720096 and 142720105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142720147) 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, 26213 + ... + 31185.

It is an arithmetic number, because the mean of its divisors is an integer number (19473210).

Almost surely, 2142720127 is an apocalyptic number.

142720127 is a deficient number, since it is larger than the sum of its proper divisors (13065553).

142720127 is a wasteful number, since it uses less digits than its factorization.

142720127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7593.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 142720127 is about 11946.5529337964. The cubic root of 142720127 is about 522.5907774788.

Adding to 142720127 its reverse (721027241), we get a palindrome (863747368).

The spelling of 142720127 in words is "one hundred forty-two million, seven hundred twenty thousand, one hundred twenty-seven".

Divisors: 1 11 2609 4973 28699 54703 12974557 142720127