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142152647 = 7136412437
BaseRepresentation
bin10000111100100…
…01001111000111
3100220111002202212
420132101033013
5242342341042
622034454035
73344164130
oct1036211707
9326432685
10142152647
117327242a
123b73431b
13235b20c0
1414c44c87
15c72e482
hex87913c7

142152647 has 16 divisors (see below), whose sum is σ = 175301952. Its totient is φ = 112250880.

The previous prime is 142152641. The next prime is 142152649. The reversal of 142152647 is 746251241.

142152647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142152647 - 26 = 142152583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142152641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57113 + ... + 59549.

It is an arithmetic number, because the mean of its divisors is an integer number (10956372).

Almost surely, 2142152647 is an apocalyptic number.

142152647 is a deficient number, since it is larger than the sum of its proper divisors (33149305).

142152647 is a wasteful number, since it uses less digits than its factorization.

142152647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098.

The product of its digits is 13440, while the sum is 32.

The square root of 142152647 is about 11922.7784932875. The cubic root of 142152647 is about 521.8972202140.

The spelling of 142152647 in words is "one hundred forty-two million, one hundred fifty-two thousand, six hundred forty-seven".

Divisors: 1 7 13 91 641 2437 4487 8333 17059 31681 58331 221767 1562117 10934819 20307521 142152647