420835870 has 64 divisors (see below), whose sum is σ = 935940096. Its totient is φ = 132670080.

The previous prime is 420835861. The next prime is 420835871. The reversal of 420835870 is 78538024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420835871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282267 + ... + 283753.

It is an arithmetic number, because the mean of its divisors is an integer number (14624064).

Almost surely, 2^420835870 is an apocalyptic number.

420835870 is an abundant number, since it is smaller than the sum of its proper divisors (515104226).

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

420835870 is a wasteful number, since it uses less digits than its factorization.

420835870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 420835870 is about 20514.2845354158. The cubic root of 420835870 is about 749.3837129851.

The spelling of 420835870 in words is "four hundred twenty million, eight hundred thirty-five thousand, eight hundred seventy".