2124425 has 6 divisors (see below), whose sum is σ = 2634318. Its totient is φ = 1699520.

The previous prime is 2124403. The next prime is 2124431. The reversal of 2124425 is 5244212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4489 + 2119936 = 67^2 + 1456^2 .

It is not a de Polignac number, because 2124425 - 2⁶ = 2124361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2124397 and 2124406.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42464 + ... + 42513.

It is an arithmetic number, because the mean of its divisors is an integer number (439053).

2^2124425 is an apocalyptic number.

2124425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2124425 is a deficient number, since it is larger than the sum of its proper divisors (509893).

2124425 is an equidigital number, since it uses as much as digits as its factorization.

2124425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84987 (or 84982 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 2124425 is about 1457.5407369950. The cubic root of 2124425 is about 128.5524825110.

Adding to 2124425 its reverse (5244212), we get a palindrome (7368637).

The spelling of 2124425 in words is "two million, one hundred twenty-four thousand, four hundred twenty-five".