3040206121 has 4 divisors (see below), whose sum is σ = 3122373892. Its totient is φ = 2958038352.

The previous prime is 3040206119. The next prime is 3040206133. The reversal of 3040206121 is 1216020403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1800814096 + 1239392025 = 42436^2 + 35205^2 .

It is a cyclic number.

It is not a de Polignac number, because 3040206121 - 2¹ = 3040206119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3040206161) 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, 41083830 + ... + 41083903.

It is an arithmetic number, because the mean of its divisors is an integer number (780593473).

Almost surely, 2^3040206121 is an apocalyptic number.

It is an amenable number.

3040206121 is a deficient number, since it is larger than the sum of its proper divisors (82167771).

3040206121 is an equidigital number, since it uses as much as digits as its factorization.

3040206121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82167770.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3040206121 is about 55138.0641753045. The cubic root of 3040206121 is about 1448.6640284451.

Adding to 3040206121 its reverse (1216020403), we get a palindrome (4256226524).

The spelling of 3040206121 in words is "three billion, forty million, two hundred six thousand, one hundred twenty-one".