2421036 has 48 divisors (see below), whose sum is σ = 6501600. Its totient is φ = 778176.

The previous prime is 2421031. The next prime is 2421043. The reversal of 2421036 is 6301242.

It is a happy number.

It is a super-2 number, since 2×2421036² = 11722830626592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2421031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2746 + ... + 3518.

It is an arithmetic number, because the mean of its divisors is an integer number (135450).

2^2421036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2421036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3250800).

2421036 is an abundant number, since it is smaller than the sum of its proper divisors (4080564).

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

2421036 is a wasteful number, since it uses less digits than its factorization.

2421036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2421036 is about 1555.9678659921. The cubic root of 2421036 is about 134.2766246623.

Adding to 2421036 its reverse (6301242), we get a palindrome (8722278).

The spelling of 2421036 in words is "two million, four hundred twenty-one thousand, thirty-six".