2420001 has 12 divisors (see below), whose sum is σ = 3701412. Its totient is φ = 1518336.

The previous prime is 2419993. The next prime is 2420009. The reversal of 2420001 is 1000242.

It is an interprime number because it is at equal distance from previous prime (2419993) and next prime (2420009).

It can be written as a sum of positive squares in 2 ways, for example, as 2030625 + 389376 = 1425^2 + 624^2 .

It is not a de Polignac number, because 2420001 - 2³ = 2419993 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (2420009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7756 + ... + 8061.

It is an arithmetic number, because the mean of its divisors is an integer number (308451).

2^2420001 is an apocalyptic number.

It is an amenable number.

2420001 is a deficient number, since it is larger than the sum of its proper divisors (1281411).

2420001 is a wasteful number, since it uses less digits than its factorization.

2420001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15840 (or 15837 counting only the distinct ones).

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

The square root of 2420001 is about 1555.6352400225. The cubic root of 2420001 is about 134.2574873845.

Adding to 2420001 its reverse (1000242), we get a palindrome (3420243).

The spelling of 2420001 in words is "two million, four hundred twenty thousand, one".