3126430421 has 2 divisors, whose sum is σ = 3126430422. Its totient is φ = 3126430420.

The previous prime is 3126430361. The next prime is 3126430427. The reversal of 3126430421 is 1240346213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2508907921 + 617522500 = 50089^2 + 24850^2 .

It is a cyclic number.

It is not a de Polignac number, because 3126430421 - 2⁶ = 3126430357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3126430427) 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, 1563215210 + 1563215211.

It is an arithmetic number, because the mean of its divisors is an integer number (1563215211).

Almost surely, 2^3126430421 is an apocalyptic number.

It is an amenable number.

3126430421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3126430421 is an equidigital number, since it uses as much as digits as its factorization.

3126430421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 3126430421 is about 55914.4920481265. The cubic root of 3126430421 is about 1462.2319058195.

Adding to 3126430421 its reverse (1240346213), we get a palindrome (4366776634).

The spelling of 3126430421 in words is "three billion, one hundred twenty-six million, four hundred thirty thousand, four hundred twenty-one".