123425040 has 40 divisors (see below), whose sum is σ = 382618368. Its totient is φ = 32913280.

The previous prime is 123425023. The next prime is 123425101. The reversal of 123425040 is 40524321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 123424998 and 123425016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256896 + ... + 257375.

Almost surely, 2^123425040 is an apocalyptic number.

123425040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123425040 is an abundant number, since it is smaller than the sum of its proper divisors (259193328).

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

123425040 is a wasteful number, since it uses less digits than its factorization.

123425040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514287 (or 514281 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 123425040 is about 11109.6822636833. The cubic root of 123425040 is about 497.8911715226.

Adding to 123425040 its reverse (40524321), we get a palindrome (163949361).

The spelling of 123425040 in words is "one hundred twenty-three million, four hundred twenty-five thousand, forty".