2043234021 has 16 divisors (see below), whose sum is σ = 2751540480. Its totient is φ = 1348569600.

The previous prime is 2043234019. The next prime is 2043234023. The reversal of 2043234021 is 1204323402.

It is an interprime number because it is at equal distance from previous prime (2043234019) and next prime (2043234023).

It is not a de Polignac number, because 2043234021 - 2¹ = 2043234019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043234023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349321 + ... + 355121.

It is an arithmetic number, because the mean of its divisors is an integer number (171971280).

Almost surely, 2^2043234021 is an apocalyptic number.

It is an amenable number.

2043234021 is a deficient number, since it is larger than the sum of its proper divisors (708306459).

2043234021 is a wasteful number, since it uses less digits than its factorization.

2043234021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956.

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

The square root of 2043234021 is about 45202.1461990468. The cubic root of 2043234021 is about 1268.9349826751.

Adding to 2043234021 its reverse (1204323402), we get a palindrome (3247557423).

The spelling of 2043234021 in words is "two billion, forty-three million, two hundred thirty-four thousand, twenty-one".