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13142555 = 57336007
BaseRepresentation
bin110010001000…
…101000011011
3220201201012022
4302020220123
511331030210
61145405055
7216465326
oct62105033
926651168
1013142555
117467218
12449978b
13295207a
141a617bd
151249155
hexc88a1b

13142555 has 8 divisors (see below), whose sum is σ = 15987552. Its totient is φ = 10369728.

The previous prime is 13142551. The next prime is 13142561. The reversal of 13142555 is 55524131.

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 13142555 - 22 = 13142551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13142551) 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, 17639 + ... + 18368.

It is an arithmetic number, because the mean of its divisors is an integer number (1998444).

Almost surely, 213142555 is an apocalyptic number.

13142555 is a deficient number, since it is larger than the sum of its proper divisors (2844997).

13142555 is an equidigital number, since it uses as much as digits as its factorization.

13142555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36085.

The product of its digits is 3000, while the sum is 26.

The square root of 13142555 is about 3625.2661971226. The cubic root of 13142555 is about 235.9898192965.

Adding to 13142555 its reverse (55524131), we get a palindrome (68666686).

The spelling of 13142555 in words is "thirteen million, one hundred forty-two thousand, five hundred fifty-five".

Divisors: 1 5 73 365 36007 180035 2628511 13142555