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13614121 = 70119421
BaseRepresentation
bin110011111011…
…110000101001
3221121200001201
4303323300221
511441122441
61203444201
7223501213
oct63736051
927550051
1013614121
117759544
124686661
132a888c1
141b455b3
1512ddc31
hexcfbc29

13614121 has 4 divisors (see below), whose sum is σ = 13634244. Its totient is φ = 13594000.

The previous prime is 13614109. The next prime is 13614131. The reversal of 13614121 is 12141631.

13614121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12141631 = 23527897.

It can be written as a sum of positive squares in 2 ways, for example, as 12702096 + 912025 = 3564^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 13614121 - 27 = 13613993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13614131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9010 + ... + 10411.

It is an arithmetic number, because the mean of its divisors is an integer number (3408561).

Almost surely, 213614121 is an apocalyptic number.

It is an amenable number.

13614121 is a deficient number, since it is larger than the sum of its proper divisors (20123).

13614121 is an equidigital number, since it uses as much as digits as its factorization.

13614121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20122.

The product of its digits is 144, while the sum is 19.

The square root of 13614121 is about 3689.7318330741. The cubic root of 13614121 is about 238.7792234177.

Adding to 13614121 its reverse (12141631), we get a palindrome (25755752).

The spelling of 13614121 in words is "thirteen million, six hundred fourteen thousand, one hundred twenty-one".

Divisors: 1 701 19421 13614121