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123120300001 = 1131089560177
BaseRepresentation
bin111001010101010001…
…0101010111111100001
3102202210110120021102011
41302222202222333201
54004122244100001
6132321035152521
711616015165646
oct1625242527741
9382713507364
10123120300001
1148240221756
121ba408a5741
13b7c179c22a
145d5d905dcd
153308dadd51
hex1caa8aafe1

123120300001 has 4 divisors (see below), whose sum is σ = 124209860292. Its totient is φ = 122030739712.

The previous prime is 123120299993. The next prime is 123120300053. The reversal of 123120300001 is 100003021321.

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 40362819025 + 82757480976 = 200905^2 + 287676^2 .

It is a cyclic number.

It is not a de Polignac number, because 123120300001 - 23 = 123120299993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123120300101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544779976 + ... + 544780201.

It is an arithmetic number, because the mean of its divisors is an integer number (31052465073).

Almost surely, 2123120300001 is an apocalyptic number.

It is an amenable number.

123120300001 is a deficient number, since it is larger than the sum of its proper divisors (1089560291).

123120300001 is a wasteful number, since it uses less digits than its factorization.

123120300001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089560290.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 123120300001 its reverse (100003021321), we get a palindrome (223123321322).

The spelling of 123120300001 in words is "one hundred twenty-three billion, one hundred twenty million, three hundred thousand, one".

Divisors: 1 113 1089560177 123120300001