2421000 has 96 divisors (see below), whose sum is σ = 8213400. Its totient is φ = 643200.

The previous prime is 2420993. The next prime is 2421031. The reversal of 2421000 is 1242.

It can be written as a sum of positive squares in 4 ways, for example, as 224676 + 2196324 = 474^2 + 1482^2 .

It is a super-2 number, since 2×2421000² = 11722482000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8866 + ... + 9134.

2^2421000 is an apocalyptic number.

2421000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4106700).

2421000 is an abundant number, since it is smaller than the sum of its proper divisors (5792400).

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

2421000 is a wasteful number, since it uses less digits than its factorization.

2421000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2421000 is about 1555.9562975868. The cubic root of 2421000 is about 134.2759591094.

Adding to 2421000 its reverse (1242), we get a palindrome (2422242).

The spelling of 2421000 in words is "two million, four hundred twenty-one thousand".