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13942145 = 57398347
BaseRepresentation
bin110101001011…
…110110000001
3222020100000202
4311023312001
512032122040
61214454545
7226335440
oct65136601
928210022
1013942145
117962a38
124804455
132b71cb9
141bccd57
151356015
hexd4bd81

13942145 has 8 divisors (see below), whose sum is σ = 19120704. Its totient is φ = 9560304.

The previous prime is 13942133. The next prime is 13942147. The reversal of 13942145 is 54124931.

13942145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13942145 - 214 = 13925761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13942147) 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, 199139 + ... + 199208.

It is an arithmetic number, because the mean of its divisors is an integer number (2390088).

Almost surely, 213942145 is an apocalyptic number.

It is an amenable number.

13942145 is a deficient number, since it is larger than the sum of its proper divisors (5178559).

13942145 is an equidigital number, since it uses as much as digits as its factorization.

13942145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398359.

The product of its digits is 4320, while the sum is 29.

The square root of 13942145 is about 3733.9181833565. The cubic root of 13942145 is about 240.6817709418.

The spelling of 13942145 in words is "thirteen million, nine hundred forty-two thousand, one hundred forty-five".

Divisors: 1 5 7 35 398347 1991735 2788429 13942145