420287910 has 32 divisors (see below), whose sum is σ = 1152790272. Its totient is φ = 96065760.

The previous prime is 420287899. The next prime is 420287911. The reversal of 420287910 is 19782024.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420287911) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1000476 + ... + 1000895.

It is an arithmetic number, because the mean of its divisors is an integer number (36024696).

Almost surely, 2^420287910 is an apocalyptic number.

420287910 is an abundant number, since it is smaller than the sum of its proper divisors (732502362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420287910 is a wasteful number, since it uses less digits than its factorization.

420287910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001388.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 420287910 is about 20500.9246132949. The cubic root of 420287910 is about 749.0583203697.

The spelling of 420287910 in words is "four hundred twenty million, two hundred eighty-seven thousand, nine hundred ten".