123421825 has 48 divisors (see below), whose sum is σ = 167935680. Its totient is φ = 89752320.

The previous prime is 123421783. The next prime is 123421843. The reversal of 123421825 is 528124321.

It is not a de Polignac number, because 123421825 - 2²¹ = 121324673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123421793 and 123421802.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1153422 + ... + 1153528.

It is an arithmetic number, because the mean of its divisors is an integer number (3498660).

Almost surely, 2^123421825 is an apocalyptic number.

It is an amenable number.

123421825 is a deficient number, since it is larger than the sum of its proper divisors (44513855).

123421825 is a wasteful number, since it uses less digits than its factorization.

123421825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 221 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 123421825 is about 11109.5375691340. The cubic root of 123421825 is about 497.8868484290.

The spelling of 123421825 in words is "one hundred twenty-three million, four hundred twenty-one thousand, eight hundred twenty-five".