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13142699 = 19691721
BaseRepresentation
bin110010001000…
…101010101011
3220201201101122
4302020222223
511331031244
61145405455
7216465623
oct62105253
926651348
1013142699
117467339
12449988b
13295215b
141a61883
1512491ee
hexc88aab

13142699 has 4 divisors (see below), whose sum is σ = 13834440. Its totient is φ = 12450960.

The previous prime is 13142693. The next prime is 13142711. The reversal of 13142699 is 99624131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99624131 = 175860243.

It is a cyclic number.

It is not a de Polignac number, because 13142699 - 28 = 13142443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13142693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345842 + ... + 345879.

It is an arithmetic number, because the mean of its divisors is an integer number (3458610).

Almost surely, 213142699 is an apocalyptic number.

13142699 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13142699 is a deficient number, since it is larger than the sum of its proper divisors (691741).

13142699 is an equidigital number, since it uses as much as digits as its factorization.

13142699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691740.

The product of its digits is 11664, while the sum is 35.

The square root of 13142699 is about 3625.2860576788. The cubic root of 13142699 is about 235.9906811891.

The spelling of 13142699 in words is "thirteen million, one hundred forty-two thousand, six hundred ninety-nine".

Divisors: 1 19 691721 13142699