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123141361 = 722513089
BaseRepresentation
bin1110101011011…
…11110011110001
322120201020012011
413111233303301
5223011010421
620115202521
73023453500
oct725576361
9276636164
10123141361
1163567a22
12352a6441
131c686a15
14124d6837
15ac264e1
hex756fcf1

123141361 has 6 divisors (see below), whose sum is σ = 143246130. Its totient is φ = 105549696.

The previous prime is 123141349. The next prime is 123141367. The reversal of 123141361 is 163141321.

It can be written as a sum of positive squares in only one way, i.e., 120318961 + 2822400 = 10969^2 + 1680^2 .

It is not a de Polignac number, because 123141361 - 27 = 123141233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123141367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1256496 + ... + 1256593.

It is an arithmetic number, because the mean of its divisors is an integer number (23874355).

Almost surely, 2123141361 is an apocalyptic number.

It is an amenable number.

123141361 is a deficient number, since it is larger than the sum of its proper divisors (20104769).

123141361 is an equidigital number, since it uses as much as digits as its factorization.

123141361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513103 (or 2513096 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

The square root of 123141361 is about 11096.9077224243. The cubic root of 123141361 is about 497.5094293811.

Adding to 123141361 its reverse (163141321), we get a palindrome (286282682).

The spelling of 123141361 in words is "one hundred twenty-three million, one hundred forty-one thousand, three hundred sixty-one".

Divisors: 1 7 49 2513089 17591623 123141361