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123112001 = 1928123059
BaseRepresentation
bin1110101011010…
…00101001000001
322120122201220202
413111220221001
5223004041001
620114414545
73023302055
oct725505101
9276581822
10123112001
1163547961
1235291455
131c67654c
14124c9c65
15ac1c96b
hex7568a41

123112001 has 8 divisors (see below), whose sum is σ = 130058400. Its totient is φ = 116212320.

The previous prime is 123111979. The next prime is 123112019. The reversal of 123112001 is 100211321.

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 123112001 - 214 = 123095617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123112051) 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, 6191 + ... + 16868.

It is an arithmetic number, because the mean of its divisors is an integer number (16257300).

Almost surely, 2123112001 is an apocalyptic number.

It is an amenable number.

123112001 is a deficient number, since it is larger than the sum of its proper divisors (6946399).

123112001 is a wasteful number, since it uses less digits than its factorization.

123112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23359.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 123112001 is about 11095.5847525040. The cubic root of 123112001 is about 497.4698866481.

Adding to 123112001 its reverse (100211321), we get a palindrome (223323322).

The spelling of 123112001 in words is "one hundred twenty-three million, one hundred twelve thousand, one".

Divisors: 1 19 281 5339 23059 438121 6479579 123112001