4034021 has 2 divisors, whose sum is σ = 4034022. Its totient is φ = 4034020.

The previous prime is 4034011. The next prime is 4034027. The reversal of 4034021 is 1204304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3204100 + 829921 = 1790^2 + 911^2 .

It is a cyclic number.

It is not a de Polignac number, because 4034021 - 2⁶ = 4033957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4033987 and 4034005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4034027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2017010 + 2017011.

It is an arithmetic number, because the mean of its divisors is an integer number (2017011).

Almost surely, 2^4034021 is an apocalyptic number.

It is an amenable number.

4034021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4034021 is an equidigital number, since it uses as much as digits as its factorization.

4034021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 4034021 is about 2008.4872416822. The cubic root of 4034021 is about 159.1888767133.

Adding to 4034021 its reverse (1204304), we get a palindrome (5238325).

The spelling of 4034021 in words is "four million, thirty-four thousand, twenty-one".