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123024121 = 1117238699
BaseRepresentation
bin1110101010100…
…11001011111001
322120111021100221
413111103023321
5222443232441
620112500041
73022454623
oct725231371
9276437327
10123024121
1163497930
123524a621
131c64554c
14124a5c13
15ac018d1
hex75532f9

123024121 has 12 divisors (see below), whose sum is σ = 142570800. Its totient is φ = 105258560.

The previous prime is 123024113. The next prime is 123024131. The reversal of 123024121 is 121420321.

It is not a de Polignac number, because 123024121 - 23 = 123024113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123024095 and 123024104.

It is not an unprimeable number, because it can be changed into a prime (123024131) 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, 16171 + ... + 22528.

It is an arithmetic number, because the mean of its divisors is an integer number (11880900).

Almost surely, 2123024121 is an apocalyptic number.

123024121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123024121 is a deficient number, since it is larger than the sum of its proper divisors (19546679).

123024121 is a wasteful number, since it uses less digits than its factorization.

123024121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38744 (or 38727 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 123024121 is about 11091.6239117633. The cubic root of 123024121 is about 497.3514902297.

Adding to 123024121 its reverse (121420321), we get a palindrome (244444442).

The spelling of 123024121 in words is "one hundred twenty-three million, twenty-four thousand, one hundred twenty-one".

Divisors: 1 11 17 187 289 3179 38699 425689 657883 7236713 11184011 123024121