2421001 has 8 divisors (see below), whose sum is σ = 2663424. Its totient is φ = 2182320.

The previous prime is 2420993. The next prime is 2421031. The reversal of 2421001 is 1001242.

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

It is a cyclic number.

It is not a de Polignac number, because 2421001 - 2³ = 2420993 is a prime.

It is a super-2 number, since 2×2421001² = 11722491684002, which contains 22 as substring.

It is a Duffinian number.

2421001 is a lucky number.

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 7 ways as a sum of consecutive naturals, for example, 531 + ... + 2263.

It is an arithmetic number, because the mean of its divisors is an integer number (332928).

2^2421001 is an apocalyptic number.

It is an amenable number.

2421001 is a deficient number, since it is larger than the sum of its proper divisors (242423).

2421001 is a wasteful number, since it uses less digits than its factorization.

2421001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2421001 is about 1555.9566189325. The cubic root of 2421001 is about 134.2759775971.

Adding to 2421001 its reverse (1001242), we get a palindrome (3422243).

It can be divided in two parts, 242 and 1001, that multiplied together give a palindrome (242242).

The spelling of 2421001 in words is "two million, four hundred twenty-one thousand, one".