512470421 has 2 divisors, whose sum is σ = 512470422. Its totient is φ = 512470420.

The previous prime is 512470417. The next prime is 512470447. The reversal of 512470421 is 124074215.

It is an a-pointer prime, because the next prime (512470447) can be obtained adding 512470421 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 454116100 + 58354321 = 21310^2 + 7639^2 .

It is a cyclic number.

It is not a de Polignac number, because 512470421 - 2² = 512470417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512470121) 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, 256235210 + 256235211.

It is an arithmetic number, because the mean of its divisors is an integer number (256235211).

Almost surely, 2^512470421 is an apocalyptic number.

It is an amenable number.

512470421 is a deficient number, since it is larger than the sum of its proper divisors (1).

512470421 is an equidigital number, since it uses as much as digits as its factorization.

512470421 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 26.

The square root of 512470421 is about 22637.8095450951. The cubic root of 512470421 is about 800.2449359378.

The spelling of 512470421 in words is "five hundred twelve million, four hundred seventy thousand, four hundred twenty-one".