2043041242021 has 8 divisors (see below), whose sum is σ = 2202295699800. Its totient is φ = 1884086418432.

The previous prime is 2043041242019. The next prime is 2043041242027. The reversal of 2043041242021 is 1202421403402.

It can be written as a sum of positive squares in 4 ways, for example, as 1039359860100 + 1003681381921 = 1019490^2 + 1001839^2 .

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 2043041242021 - 2¹ = 2043041242019 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 (2043041242027) 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, 74894380 + ... + 74921653.

It is an arithmetic number, because the mean of its divisors is an integer number (275286962475).

Almost surely, 2^{2043041242021} is an apocalyptic number.

It is an amenable number.

2043041242021 is a deficient number, since it is larger than the sum of its proper divisors (159254457779).

2043041242021 is a wasteful number, since it uses less digits than its factorization.

2043041242021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149817095.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 2043041242021 its reverse (1202421403402), we get a palindrome (3245462645423).

The spelling of 2043041242021 in words is "two trillion, forty-three billion, forty-one million, two hundred forty-two thousand, twenty-one".