2121043042 has 16 divisors (see below), whose sum is σ = 3224516832. Its totient is φ = 1046299680.

The previous prime is 2121043027. The next prime is 2121043061. The reversal of 2121043042 is 2403401212.

It is a super-2 number, since 2×2121043042² = 8997647172033227528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20917 + ... + 68407.

It is an arithmetic number, because the mean of its divisors is an integer number (201532302).

Almost surely, 2^2121043042 is an apocalyptic number.

2121043042 is a deficient number, since it is larger than the sum of its proper divisors (1103473790).

2121043042 is a wasteful number, since it uses less digits than its factorization.

2121043042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47793.

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

The square root of 2121043042 is about 46054.7830523606. The cubic root of 2121043042 is about 1284.8423031662.

Adding to 2121043042 its reverse (2403401212), we get a palindrome (4524444254).

The spelling of 2121043042 in words is "two billion, one hundred twenty-one million, forty-three thousand, forty-two".