420961285 has 8 divisors (see below), whose sum is σ = 507380256. Its totient is φ = 335284560.

The previous prime is 420961237. The next prime is 420961291. The reversal of 420961285 is 582169024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420961285 - 2²⁷ = 286743557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184311 + ... + 186580.

It is an arithmetic number, because the mean of its divisors is an integer number (63422532).

Almost surely, 2^420961285 is an apocalyptic number.

It is an amenable number.

420961285 is a deficient number, since it is larger than the sum of its proper divisors (86418971).

420961285 is a wasteful number, since it uses less digits than its factorization.

420961285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371123.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 420961285 is about 20517.3410801692. The cubic root of 420961285 is about 749.4581478819.

The spelling of 420961285 in words is "four hundred twenty million, nine hundred sixty-one thousand, two hundred eighty-five".