421320527 has 2 divisors, whose sum is σ = 421320528. Its totient is φ = 421320526.

The previous prime is 421320511. The next prime is 421320539. The reversal of 421320527 is 725023124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421320527 - 2⁴ = 421320511 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 421320496 and 421320505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421320127) 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, 210660263 + 210660264.

It is an arithmetic number, because the mean of its divisors is an integer number (210660264).

Almost surely, 2^421320527 is an apocalyptic number.

421320527 is a deficient number, since it is larger than the sum of its proper divisors (1).

421320527 is an equidigital number, since it uses as much as digits as its factorization.

421320527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 421320527 is about 20526.0938076391. The cubic root of 421320527 is about 749.6712793521.

The spelling of 421320527 in words is "four hundred twenty-one million, three hundred twenty thousand, five hundred twenty-seven".