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123130401 = 371578077
BaseRepresentation
bin1110101011011…
…01001000100001
322120200200011020
413111231020201
5223010133101
620115040053
73023406522
oct725551041
9276620136
10123130401
116355a769
12352a0029
131c681a34
14124d2849
15ac23136
hex756d221

123130401 has 8 divisors (see below), whose sum is σ = 166486464. Its totient is φ = 80930640.

The previous prime is 123130379. The next prime is 123130451. The reversal of 123130401 is 104031321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123130401 - 29 = 123129889 is a prime.

It is a super-2 number, since 2×1231304012 = 30322191300841602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123130451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288826 + ... + 289251.

It is an arithmetic number, because the mean of its divisors is an integer number (20810808).

Almost surely, 2123130401 is an apocalyptic number.

It is an amenable number.

123130401 is a deficient number, since it is larger than the sum of its proper divisors (43356063).

123130401 is an equidigital number, since it uses as much as digits as its factorization.

123130401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578151.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123130401 is about 11096.4138801687. The cubic root of 123130401 is about 497.4946689327.

Adding to 123130401 its reverse (104031321), we get a palindrome (227161722).

The spelling of 123130401 in words is "one hundred twenty-three million, one hundred thirty thousand, four hundred one".

Divisors: 1 3 71 213 578077 1734231 41043467 123130401