123425540 has 24 divisors (see below), whose sum is σ = 296221632. Its totient is φ = 42317280.

The previous prime is 123425531. The next prime is 123425543. The reversal of 123425540 is 45524321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123425543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440666 + ... + 440945.

It is an arithmetic number, because the mean of its divisors is an integer number (12342568).

Almost surely, 2^123425540 is an apocalyptic number.

123425540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123425540 is an abundant number, since it is smaller than the sum of its proper divisors (172796092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123425540 is a wasteful number, since it uses less digits than its factorization.

123425540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881627 (or 881625 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 123425540 is about 11109.7047665543. The cubic root of 123425540 is about 497.8918438477.

Adding to 123425540 its reverse (45524321), we get a palindrome (168949861).

The spelling of 123425540 in words is "one hundred twenty-three million, four hundred twenty-five thousand, five hundred forty".