512420407 has 2 divisors, whose sum is σ = 512420408. Its totient is φ = 512420406.

The previous prime is 512420333. The next prime is 512420417. The reversal of 512420407 is 704024215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 512420407 - 2¹⁵ = 512387639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512420417) 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, 256210203 + 256210204.

It is an arithmetic number, because the mean of its divisors is an integer number (256210204).

Almost surely, 2^512420407 is an apocalyptic number.

512420407 is a deficient number, since it is larger than the sum of its proper divisors (1).

512420407 is an equidigital number, since it uses as much as digits as its factorization.

512420407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 512420407 is about 22636.7048617947. The cubic root of 512420407 is about 800.2189020761.

The spelling of 512420407 in words is "five hundred twelve million, four hundred twenty thousand, four hundred seven".