2421245 has 8 divisors (see below), whose sum is σ = 2938680. Its totient is φ = 1914880.

The previous prime is 2421229. The next prime is 2421247. The reversal of 2421245 is 5421242.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 177241 + 2244004 = 421^2 + 1498^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2421245 - 2⁴ = 2421229 is a prime.

It is a super-3 number, since 3×2421245³ = 42583118727333843375, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2276 + ... + 3165.

It is an arithmetic number, because the mean of its divisors is an integer number (367335).

2^2421245 is an apocalyptic number.

It is an amenable number.

2421245 is a deficient number, since it is larger than the sum of its proper divisors (517435).

2421245 is an equidigital number, since it uses as much as digits as its factorization.

2421245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535.

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

The square root of 2421245 is about 1556.0350253127. The cubic root of 2421245 is about 134.2804884362.

Adding to 2421245 its reverse (5421242), we get a palindrome (7842487).

The spelling of 2421245 in words is "two million, four hundred twenty-one thousand, two hundred forty-five".