123123015 has 12 divisors (see below), whose sum is σ = 213413304. Its totient is φ = 65665584.

The previous prime is 123122981. The next prime is 123123023. The reversal of 123123015 is 510321321.

It is not a de Polignac number, because 123123015 - 2⁸ = 123122759 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1367989 + ... + 1368078.

It is an arithmetic number, because the mean of its divisors is an integer number (17784442).

Almost surely, 2^123123015 is an apocalyptic number.

123123015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123123015 is a deficient number, since it is larger than the sum of its proper divisors (90290289).

123123015 is a wasteful number, since it uses less digits than its factorization.

123123015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736078 (or 2736075 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 123123015 is about 11096.0810649526. The cubic root of 123123015 is about 497.4847212971.

Adding to 123123015 its reverse (510321321), we get a palindrome (633444336).

The spelling of 123123015 in words is "one hundred twenty-three million, one hundred twenty-three thousand, fifteen".