420471850 has 12 divisors (see below), whose sum is σ = 782077734. Its totient is φ = 168188720.

The previous prime is 420471839. The next prime is 420471889. The reversal of 420471850 is 58174024.

It can be written as a sum of positive squares in 3 ways, for example, as 306985441 + 113486409 = 17521^2 + 10653^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4204669 + ... + 4204768.

Almost surely, 2^420471850 is an apocalyptic number.

420471850 is a deficient number, since it is larger than the sum of its proper divisors (361605884).

420471850 is a wasteful number, since it uses less digits than its factorization.

420471850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8409449 (or 8409444 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 420471850 is about 20505.4102616846. The cubic root of 420471850 is about 749.1675801484.

The spelling of 420471850 in words is "four hundred twenty million, four hundred seventy-one thousand, eight hundred fifty".