412251421 has 2 divisors, whose sum is σ = 412251422. Its totient is φ = 412251420.

The previous prime is 412251391. The next prime is 412251439. The reversal of 412251421 is 124152214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248692900 + 163558521 = 15770^2 + 12789^2 .

It is a cyclic number.

It is not a de Polignac number, because 412251421 - 2¹¹ = 412249373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 412251392 and 412251401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (412251461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206125710 + 206125711.

It is an arithmetic number, because the mean of its divisors is an integer number (206125711).

Almost surely, 2^412251421 is an apocalyptic number.

It is an amenable number.

412251421 is a deficient number, since it is larger than the sum of its proper divisors (1).

412251421 is an equidigital number, since it uses as much as digits as its factorization.

412251421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 640, while the sum is 22.

The square root of 412251421 is about 20303.9754974241. The cubic root of 412251421 is about 744.2532168162.

The spelling of 412251421 in words is "four hundred twelve million, two hundred fifty-one thousand, four hundred twenty-one".