4023012421 has 2 divisors, whose sum is σ = 4023012422. Its totient is φ = 4023012420.

The previous prime is 4023012397. The next prime is 4023012503. The reversal of 4023012421 is 1242103204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4021335396 + 1677025 = 63414^2 + 1295^2 .

It is a cyclic number.

It is not a de Polignac number, because 4023012421 - 2²³ = 4014623813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4023012121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2011506210 + 2011506211.

It is an arithmetic number, because the mean of its divisors is an integer number (2011506211).

Almost surely, 2^4023012421 is an apocalyptic number.

It is an amenable number.

4023012421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4023012421 is an equidigital number, since it uses as much as digits as its factorization.

4023012421 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4023012421 is about 63427.2214510458. The cubic root of 4023012421 is about 1590.4393945365.

Adding to 4023012421 its reverse (1242103204), we get a palindrome (5265115625).

The spelling of 4023012421 in words is "four billion, twenty-three million, twelve thousand, four hundred twenty-one".