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123386241 = 3112339907
BaseRepresentation
bin1110101101010…
…11100110000001
322121011200002210
413112223212001
5223041324431
620124332333
73025523436
oct726534601
9277150083
10123386241
1163714a00
12353a40a9
131c741314
141255bb8d
15ac73d46
hex75ab981

123386241 has 12 divisors (see below), whose sum is σ = 180831056. Its totient is φ = 74779320.

The previous prime is 123386239. The next prime is 123386267. The reversal of 123386241 is 142683321.

It is not a de Polignac number, because 123386241 - 21 = 123386239 is a prime.

It is a super-2 number, since 2×1233862412 = 30448328936220162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123386199 and 123386208.

It is not an unprimeable number, because it can be changed into a prime (123386281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169591 + ... + 170316.

Almost surely, 2123386241 is an apocalyptic number.

123386241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123386241 is a deficient number, since it is larger than the sum of its proper divisors (57444815).

123386241 is a wasteful number, since it uses less digits than its factorization.

123386241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339932 (or 339921 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 123386241 is about 11107.9359468805. The cubic root of 123386241 is about 497.8389949030.

The spelling of 123386241 in words is "one hundred twenty-three million, three hundred eighty-six thousand, two hundred forty-one".

Divisors: 1 3 11 33 121 363 339907 1019721 3738977 11216931 41128747 123386241