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13122444242 = 223385174077
BaseRepresentation
bin11000011100010100…
…01001101111010010
31020212112012020101102
430032022021233102
5203333321203432
610010043304402
7643120635635
oct141612115722
936775166342
1013122444242
115624306646
12266281b102
13131187330b
148c6b1dc1c
1551c08b962
hex30e289bd2

13122444242 has 16 divisors (see below), whose sum is σ = 20545088832. Its totient is φ = 6274237200.

The previous prime is 13122444241. The next prime is 13122444253. The reversal of 13122444242 is 24244422131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13122444241) 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, 140108 + ... + 214184.

It is an arithmetic number, because the mean of its divisors is an integer number (1284068052).

Almost surely, 213122444242 is an apocalyptic number.

13122444242 is a deficient number, since it is larger than the sum of its proper divisors (7422644590).

13122444242 is a wasteful number, since it uses less digits than its factorization.

13122444242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77953.

The product of its digits is 12288, while the sum is 29.

Adding to 13122444242 its reverse (24244422131), we get a palindrome (37366866373).

The spelling of 13122444242 in words is "thirteen billion, one hundred twenty-two million, four hundred forty-four thousand, two hundred forty-two".

Divisors: 1 2 23 46 3851 7702 74077 88573 148154 177146 1703771 3407542 285270527 570541054 6561222121 13122444242