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123010001 = 161975979
BaseRepresentation
bin1110101010011…
…11101111010001
322120110112222222
413111033233101
5222442310001
620112310425
73022365512
oct725175721
9276415888
10123010001
1163488264
1235242415
131c63bcaa
14124a0a09
15abec61b
hex754fbd1

123010001 has 4 divisors (see below), whose sum is σ = 123087600. Its totient is φ = 122932404.

The previous prime is 123009989. The next prime is 123010007. The reversal of 123010001 is 100010321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123010001 - 218 = 122747857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123010007) 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 3 ways as a sum of consecutive naturals, for example, 36371 + ... + 39608.

It is an arithmetic number, because the mean of its divisors is an integer number (30771900).

Almost surely, 2123010001 is an apocalyptic number.

It is an amenable number.

123010001 is a deficient number, since it is larger than the sum of its proper divisors (77599).

123010001 is an equidigital number, since it uses as much as digits as its factorization.

123010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77598.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 123010001 is about 11090.9873771455. The cubic root of 123010001 is about 497.3324617885.

Adding to 123010001 its reverse (100010321), we get a palindrome (223020322).

The spelling of 123010001 in words is "one hundred twenty-three million, ten thousand, one".

Divisors: 1 1619 75979 123010001