123040015 has 16 divisors (see below), whose sum is σ = 168920640. Its totient is φ = 84280320.

The previous prime is 123040003. The next prime is 123040037. The reversal of 123040015 is 510040321.

It is not a de Polignac number, because 123040015 - 2⁷ = 123039887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64191 + ... + 66079.

It is an arithmetic number, because the mean of its divisors is an integer number (10557540).

Almost surely, 2^123040015 is an apocalyptic number.

123040015 is a deficient number, since it is larger than the sum of its proper divisors (45880625).

123040015 is a wasteful number, since it uses less digits than its factorization.

123040015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762.

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

The square root of 123040015 is about 11092.3403752319. The cubic root of 123040015 is about 497.3729076127.

Adding to 123040015 its reverse (510040321), we get a palindrome (633080336).

The spelling of 123040015 in words is "one hundred twenty-three million, forty thousand, fifteen".