2121043 has 2 divisors, whose sum is σ = 2121044. Its totient is φ = 2121042.

The previous prime is 2121029. The next prime is 2121121. The reversal of 2121043 is 3401212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121043 - 2⁵ = 2121011 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060521 + 1060522.

It is an arithmetic number, because the mean of its divisors is an integer number (1060522).

2^2121043 is an apocalyptic number.

2121043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121043 is an equidigital number, since it uses as much as digits as its factorization.

2121043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2121043 is about 1456.3801014845. The cubic root of 2121043 is about 128.4842294686.

Adding to 2121043 its reverse (3401212), we get a palindrome (5522255).

The spelling of 2121043 in words is "two million, one hundred twenty-one thousand, forty-three".