2043012421 has 4 divisors (see below), whose sum is σ = 2131839072. Its totient is φ = 1954185772.

The previous prime is 2043012407. The next prime is 2043012463. The reversal of 2043012421 is 1242103402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2043012421 - 2¹¹ = 2043010373 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 (2043012481) 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 3 ways as a sum of consecutive naturals, for example, 44413291 + ... + 44413336.

It is an arithmetic number, because the mean of its divisors is an integer number (532959768).

Almost surely, 2^2043012421 is an apocalyptic number.

It is an amenable number.

2043012421 is a deficient number, since it is larger than the sum of its proper divisors (88826651).

2043012421 is an equidigital number, since it uses as much as digits as its factorization.

2043012421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88826650.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2043012421 is about 45199.6949215368. The cubic root of 2043012421 is about 1268.8891066838.

Adding to 2043012421 its reverse (1242103402), we get a palindrome (3285115823).

The spelling of 2043012421 in words is "two billion, forty-three million, twelve thousand, four hundred twenty-one".