4012121043 has 12 divisors (see below), whose sum is σ = 6623184048. Its totient is φ = 2292640560.

The previous prime is 4012121039. The next prime is 4012121089. The reversal of 4012121043 is 3401212104.

4012121043 is a `hidden beast` number, since 401 + 212 + 10 + 43 = 666.

It is not a de Polignac number, because 4012121043 - 2² = 4012121039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4012121033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31842168 + ... + 31842293.

It is an arithmetic number, because the mean of its divisors is an integer number (551932004).

Almost surely, 2^4012121043 is an apocalyptic number.

4012121043 is a deficient number, since it is larger than the sum of its proper divisors (2611063005).

4012121043 is a wasteful number, since it uses less digits than its factorization.

4012121043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63684474 (or 63684471 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 4012121043 is about 63341.3059780109. The cubic root of 4012121043 is about 1589.0028481368.

Adding to 4012121043 its reverse (3401212104), we get a palindrome (7413333147).

The spelling of 4012121043 in words is "four billion, twelve million, one hundred twenty-one thousand, forty-three".