123512153 has 12 divisors (see below), whose sum is σ = 129201408. Its totient is φ = 117949920.

The previous prime is 123512143. The next prime is 123512161. The reversal of 123512153 is 351215321.

It is a happy number.

It is not a de Polignac number, because 123512153 - 2⁸ = 123511897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123512143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245300 + ... + 245802.

It is an arithmetic number, because the mean of its divisors is an integer number (10766784).

Almost surely, 2^123512153 is an apocalyptic number.

It is an amenable number.

123512153 is a deficient number, since it is larger than the sum of its proper divisors (5689255).

123512153 is an frugal number, since it uses more digits than its factorization.

123512153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 623 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 123512153 is about 11113.6021613157. The cubic root of 123512153 is about 498.0082806427.

Adding to 123512153 its reverse (351215321), we get a palindrome (474727474).

The spelling of 123512153 in words is "one hundred twenty-three million, five hundred twelve thousand, one hundred fifty-three".