421251305 has 16 divisors (see below), whose sum is σ = 517017600. Its totient is φ = 329409600.

The previous prime is 421251251. The next prime is 421251317. The reversal of 421251305 is 503152124.

It is not a de Polignac number, because 421251305 - 2⁶ = 421251241 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34616 + ... + 45174.

It is an arithmetic number, because the mean of its divisors is an integer number (32313600).

Almost surely, 2^421251305 is an apocalyptic number.

It is an amenable number.

421251305 is a deficient number, since it is larger than the sum of its proper divisors (95766295).

421251305 is a wasteful number, since it uses less digits than its factorization.

421251305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10744.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 421251305 is about 20524.4075432155. The cubic root of 421251305 is about 749.6302206773.

The spelling of 421251305 in words is "four hundred twenty-one million, two hundred fifty-one thousand, three hundred five".