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123080801 = 829148469
BaseRepresentation
bin1110101011000…
…01000001100001
322120121011010012
413111201001201
5223002041201
620114014305
73023112104
oct725410141
9276534105
10123080801
1163526478
1235277395
131c66529c
14124bc73b
15ac135bb
hex7561061

123080801 has 4 divisors (see below), whose sum is σ = 123230100. Its totient is φ = 122931504.

The previous prime is 123080773. The next prime is 123080821. The reversal of 123080801 is 108080321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52940176 + 70140625 = 7276^2 + 8375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-123080801 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 (123080821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73406 + ... + 75063.

It is an arithmetic number, because the mean of its divisors is an integer number (30807525).

Almost surely, 2123080801 is an apocalyptic number.

It is an amenable number.

123080801 is a deficient number, since it is larger than the sum of its proper divisors (149299).

123080801 is an equidigital number, since it uses as much as digits as its factorization.

123080801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149298.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 123080801 is about 11094.1786987591. The cubic root of 123080801 is about 497.4278588694.

The spelling of 123080801 in words is "one hundred twenty-three million, eighty thousand, eight hundred one".

Divisors: 1 829 148469 123080801