2403423021 has 16 divisors (see below), whose sum is σ = 3216320000. Its totient is φ = 1596416688.

The previous prime is 2403422971. The next prime is 2403423041. The reversal of 2403423021 is 1203243042.

It is not a de Polignac number, because 2403423021 - 2⁷ = 2403422893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2403423041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374870 + ... + 1376616.

It is an arithmetic number, because the mean of its divisors is an integer number (201020000).

Almost surely, 2^2403423021 is an apocalyptic number.

It is an amenable number.

2403423021 is a deficient number, since it is larger than the sum of its proper divisors (812896979).

2403423021 is a wasteful number, since it uses less digits than its factorization.

2403423021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2403423021 is about 49024.7184693599. The cubic root of 2403423021 is about 1339.5021208568.

Adding to 2403423021 its reverse (1203243042), we get a palindrome (3606666063).

The spelling of 2403423021 in words is "two billion, four hundred three million, four hundred twenty-three thousand, twenty-one".