420075870 has 32 divisors (see below), whose sum is σ = 1025274240. Its totient is φ = 110121120.

The previous prime is 420075847. The next prime is 420075871. The reversal of 420075870 is 78570024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420075871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116896 + ... + 120435.

It is an arithmetic number, because the mean of its divisors is an integer number (32039820).

Almost surely, 2^420075870 is an apocalyptic number.

420075870 is an abundant number, since it is smaller than the sum of its proper divisors (605198370).

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

420075870 is a wasteful number, since it uses less digits than its factorization.

420075870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237400.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 420075870 is about 20495.7524867959. The cubic root of 420075870 is about 748.9323297170.

The spelling of 420075870 in words is "four hundred twenty million, seventy-five thousand, eight hundred seventy".