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123414445 = 57111312447
BaseRepresentation
bin1110101101100…
…10011110101101
322121020002210101
413112302132231
5223043230240
620125111101
73026001610
oct726623655
9277202711
10123414445
1163734110
12353b8491
131c7510cb
1412568177
15ac7c39a
hex75b27ad

123414445 has 32 divisors (see below), whose sum is σ = 186126336. Its totient is φ = 76315200.

The previous prime is 123414439. The next prime is 123414449. The reversal of 123414445 is 544414321.

It is not a de Polignac number, because 123414445 - 211 = 123412397 is a prime.

It is a super-2 number, since 2×1234144452 = 30462250469316050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123414449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49212 + ... + 51658.

It is an arithmetic number, because the mean of its divisors is an integer number (5816448).

Almost surely, 2123414445 is an apocalyptic number.

It is an amenable number.

123414445 is a deficient number, since it is larger than the sum of its proper divisors (62711891).

123414445 is a wasteful number, since it uses less digits than its factorization.

123414445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601.

The product of its digits is 7680, while the sum is 28.

The square root of 123414445 is about 11109.2054171304. The cubic root of 123414445 is about 497.8769245273.

Adding to 123414445 its reverse (544414321), we get a palindrome (667828766).

The spelling of 123414445 in words is "one hundred twenty-three million, four hundred fourteen thousand, four hundred forty-five".

Divisors: 1 5 7 11 35 55 77 131 385 655 917 1441 2447 4585 7205 10087 12235 17129 26917 50435 85645 134585 188419 320557 942095 1602785 2243899 3526127 11219495 17630635 24682889 123414445