123425015 has 64 divisors (see below), whose sum is σ = 194088960. Its totient is φ = 73328640.

The previous prime is 123425011. The next prime is 123425023. The reversal of 123425015 is 510524321.

It is not a de Polignac number, because 123425015 - 2² = 123425011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123425011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 396710 + ... + 397020.

It is an arithmetic number, because the mean of its divisors is an integer number (3032640).

Almost surely, 2^123425015 is an apocalyptic number.

123425015 is a deficient number, since it is larger than the sum of its proper divisors (70663945).

123425015 is a wasteful number, since it uses less digits than its factorization.

123425015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 123425015 is about 11109.6811385386. The cubic root of 123425015 is about 497.8911379063.

Adding to 123425015 its reverse (510524321), we get a palindrome (633949336).

The spelling of 123425015 in words is "one hundred twenty-three million, four hundred twenty-five thousand, fifteen".