Search a number
-
+
230120125 = 531840961
BaseRepresentation
bin11011011011101…
…01101010111101
3121001000022110121
431231311222331
5432402321000
634500134541
75462663104
oct1555655275
9531008417
10230120125
11108995724
1265097451
13388a1b71
14227c303b
1515308b1a
hexdb75abd

230120125 has 8 divisors (see below), whose sum is σ = 287190072. Its totient is φ = 184096000.

The previous prime is 230120123. The next prime is 230120141. The reversal of 230120125 is 521021032.

It can be written as a sum of positive squares in 4 ways, for example, as 47032164 + 183087961 = 6858^2 + 13531^2 .

It is not a de Polignac number, because 230120125 - 21 = 230120123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230120099 and 230120108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230120123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920356 + ... + 920605.

It is an arithmetic number, because the mean of its divisors is an integer number (35898759).

Almost surely, 2230120125 is an apocalyptic number.

230120125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

230120125 is a deficient number, since it is larger than the sum of its proper divisors (57069947).

230120125 is an equidigital number, since it uses as much as digits as its factorization.

230120125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840976 (or 1840966 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 230120125 is about 15169.7107750939. The cubic root of 230120125 is about 612.7992151824.

Adding to 230120125 its reverse (521021032), we get a palindrome (751141157).

The spelling of 230120125 in words is "two hundred thirty million, one hundred twenty thousand, one hundred twenty-five".

Divisors: 1 5 25 125 1840961 9204805 46024025 230120125