412012421 has 2 divisors, whose sum is σ = 412012422. Its totient is φ = 412012420.

The previous prime is 412012319. The next prime is 412012441. The reversal of 412012421 is 124210214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408444100 + 3568321 = 20210^2 + 1889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-412012421 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 412012421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (412012441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206006210 + 206006211.

It is an arithmetic number, because the mean of its divisors is an integer number (206006211).

Almost surely, 2^412012421 is an apocalyptic number.

It is an amenable number.

412012421 is a deficient number, since it is larger than the sum of its proper divisors (1).

412012421 is an equidigital number, since it uses as much as digits as its factorization.

412012421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 412012421 is about 20298.0890972525. The cubic root of 412012421 is about 744.1093637409.

Adding to 412012421 its reverse (124210214), we get a palindrome (536222635).

The spelling of 412012421 in words is "four hundred twelve million, twelve thousand, four hundred twenty-one".