2042043421 has 8 divisors (see below), whose sum is σ = 2229266304. Its totient is φ = 1855084320.

The previous prime is 2042043407. The next prime is 2042043427. The reversal of 2042043421 is 1243402402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2042043421 - 2⁹ = 2042042909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2042043392 and 2042043401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2042043427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49576 + ... + 80881.

It is an arithmetic number, because the mean of its divisors is an integer number (278658288).

Almost surely, 2^2042043421 is an apocalyptic number.

It is an amenable number.

2042043421 is a deficient number, since it is larger than the sum of its proper divisors (187222883).

2042043421 is a wasteful number, since it uses less digits than its factorization.

2042043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131891.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2042043421 is about 45188.9745513217. The cubic root of 2042043421 is about 1268.6884637549.

Adding to 2042043421 its reverse (1243402402), we get a palindrome (3285445823).

The spelling of 2042043421 in words is "two billion, forty-two million, forty-three thousand, four hundred twenty-one".