4030021043 has 2 divisors, whose sum is σ = 4030021044. Its totient is φ = 4030021042.

The previous prime is 4030021033. The next prime is 4030021057. The reversal of 4030021043 is 3401200304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4030021043 - 2⁶ = 4030020979 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (4030021013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2015010521 + 2015010522.

It is an arithmetic number, because the mean of its divisors is an integer number (2015010522).

Almost surely, 2^4030021043 is an apocalyptic number.

4030021043 is a deficient number, since it is larger than the sum of its proper divisors (1).

4030021043 is an equidigital number, since it uses as much as digits as its factorization.

4030021043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 4030021043 is about 63482.4467313603. The cubic root of 4030021043 is about 1591.3624442780.

Adding to 4030021043 its reverse (3401200304), we get a palindrome (7431221347).

The spelling of 4030021043 in words is "four billion, thirty million, twenty-one thousand, forty-three".