2043342121 has 4 divisors (see below), whose sum is σ = 2043504000. Its totient is φ = 2043180244.

The previous prime is 2043342113. The next prime is 2043342127. The reversal of 2043342121 is 1212433402.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1212433402 = 2 ⋅606216701.

It is a cyclic number.

It is not a de Polignac number, because 2043342121 - 2³ = 2043342113 is a prime.

It is a super-3 number, since 3×2043342121³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2043342092 and 2043342101.

It is not an unprimeable number, because it can be changed into a prime (2043342127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60241 + ... + 87838.

It is an arithmetic number, because the mean of its divisors is an integer number (510876000).

Almost surely, 2^2043342121 is an apocalyptic number.

It is an amenable number.

2043342121 is a deficient number, since it is larger than the sum of its proper divisors (161879).

2043342121 is a wasteful number, since it uses less digits than its factorization.

2043342121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161878.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2043342121 is about 45203.3419229154. The cubic root of 2043342121 is about 1268.9573605087.

Adding to 2043342121 its reverse (1212433402), we get a palindrome (3255775523).

The spelling of 2043342121 in words is "two billion, forty-three million, three hundred forty-two thousand, one hundred twenty-one".