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121414345 = 5131867913
BaseRepresentation
bin1110011110010…
…10001011001001
322110110111011121
413033022023021
5222040224340
620014155241
73003001453
oct717121311
9273414147
10121414345
1162598438
12347b2b21
131c200910
14121a72d3
15a9d494a
hex73ca2c9

121414345 has 8 divisors (see below), whose sum is σ = 156904776. Its totient is φ = 89659776.

The previous prime is 121414343. The next prime is 121414367. The reversal of 121414345 is 543414121.

It can be written as a sum of positive squares in 4 ways, for example, as 9308601 + 112105744 = 3051^2 + 10588^2 .

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 121414345 - 21 = 121414343 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121414343) 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, 933892 + ... + 934021.

It is an arithmetic number, because the mean of its divisors is an integer number (19613097).

Almost surely, 2121414345 is an apocalyptic number.

It is an amenable number.

121414345 is a deficient number, since it is larger than the sum of its proper divisors (35490431).

121414345 is a wasteful number, since it uses less digits than its factorization.

121414345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867931.

The product of its digits is 1920, while the sum is 25.

The square root of 121414345 is about 11018.8177678007. The cubic root of 121414345 is about 495.1726704343.

Adding to 121414345 its reverse (543414121), we get a palindrome (664828466).

The spelling of 121414345 in words is "one hundred twenty-one million, four hundred fourteen thousand, three hundred forty-five".

Divisors: 1 5 13 65 1867913 9339565 24282869 121414345