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13440242 = 235918719
BaseRepresentation
bin110011010001…
…010011110010
3221021211112202
4303101103302
511420041432
61200023202
7222145244
oct63212362
927254482
1013440242
11764a942
124601b02
132a2770a
141adc094
1512a7462
hexcd14f2

13440242 has 8 divisors (see below), whose sum is σ = 20217600. Its totient is φ = 6701044.

The previous prime is 13440241. The next prime is 13440269. The reversal of 13440242 is 24204431.

13440242 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 not an unprimeable number, because it can be changed into a prime (13440241) 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, 8642 + ... + 10077.

It is an arithmetic number, because the mean of its divisors is an integer number (2527200).

Almost surely, 213440242 is an apocalyptic number.

13440242 is a deficient number, since it is larger than the sum of its proper divisors (6777358).

13440242 is a wasteful number, since it uses less digits than its factorization.

13440242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19080.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 13440242 is about 3666.0935612720. The cubic root of 13440242 is about 237.7583051150.

Adding to 13440242 its reverse (24204431), we get a palindrome (37644673).

The spelling of 13440242 in words is "thirteen million, four hundred forty thousand, two hundred forty-two".

Divisors: 1 2 359 718 18719 37438 6720121 13440242