2423610021 has 12 divisors (see below), whose sum is σ = 3759068832. Its totient is φ = 1384919928.

The previous prime is 2423610017. The next prime is 2423610097. The reversal of 2423610021 is 1200163242.

It is not a de Polignac number, because 2423610021 - 2² = 2423610017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2423610021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2423610121) 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, 8243425 + ... + 8243718.

It is an arithmetic number, because the mean of its divisors is an integer number (313255736).

Almost surely, 2^2423610021 is an apocalyptic number.

2423610021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2423610021 is a deficient number, since it is larger than the sum of its proper divisors (1335458811).

2423610021 is a wasteful number, since it uses less digits than its factorization.

2423610021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16487160 (or 16487153 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2423610021 is about 49230.1738875661. The cubic root of 2423610021 is about 1343.2419499081.

Adding to 2423610021 its reverse (1200163242), we get a palindrome (3623773263).

The spelling of 2423610021 in words is "two billion, four hundred twenty-three million, six hundred ten thousand, twenty-one".