2421601 has 24 divisors (see below), whose sum is σ = 3162240. Its totient is φ = 1812096.

The previous prime is 2421593. The next prime is 2421641. The reversal of 2421601 is 1061242.

2421601 = 116² + 117² + ... + 206².

2421601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2421601 - 2³ = 2421593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27165 + ... + 27253.

It is an arithmetic number, because the mean of its divisors is an integer number (131760).

2^2421601 is an apocalyptic number.

It is an amenable number.

2421601 is a deficient number, since it is larger than the sum of its proper divisors (740639).

2421601 is a wasteful number, since it uses less digits than its factorization.

2421601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2421601 is about 1556.1494144201. The cubic root of 2421601 is about 134.2870692808.

Adding to 2421601 its reverse (1061242), we get a palindrome (3482843).

The spelling of 2421601 in words is "two million, four hundred twenty-one thousand, six hundred one".