4012344421 has 2 divisors, whose sum is σ = 4012344422. Its totient is φ = 4012344420.

The previous prime is 4012344409. The next prime is 4012344431. The reversal of 4012344421 is 1244432104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3677088321 + 335256100 = 60639^2 + 18310^2 .

It is a cyclic number.

It is not a de Polignac number, because 4012344421 - 2¹⁹ = 4011820133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4012344431) 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, 2006172210 + 2006172211.

It is an arithmetic number, because the mean of its divisors is an integer number (2006172211).

Almost surely, 2^4012344421 is an apocalyptic number.

It is an amenable number.

4012344421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4012344421 is an equidigital number, since it uses as much as digits as its factorization.

4012344421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 4012344421 is about 63343.0692420252. The cubic root of 4012344421 is about 1589.0323372514.

Adding to 4012344421 its reverse (1244432104), we get a palindrome (5256776525).

The spelling of 4012344421 in words is "four billion, twelve million, three hundred forty-four thousand, four hundred twenty-one".