420981850 has 24 divisors (see below), whose sum is σ = 802128348. Its totient is φ = 164284800.

The previous prime is 420981817. The next prime is 420981851. The reversal of 420981850 is 58189024.

It can be written as a sum of positive squares in 6 ways, for example, as 71927361 + 349054489 = 8481^2 + 18683^2 .

It is not an unprimeable number, because it can be changed into a prime (420981851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100629 + ... + 104728.

Almost surely, 2^420981850 is an apocalyptic number.

420981850 is a deficient number, since it is larger than the sum of its proper divisors (381146498).

420981850 is a wasteful number, since it uses less digits than its factorization.

420981850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205410 (or 205405 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 420981850 is about 20517.8422354789. The cubic root of 420981850 is about 749.4703519779.

The spelling of 420981850 in words is "four hundred twenty million, nine hundred eighty-one thousand, eight hundred fifty".