420249250 has 32 divisors (see below), whose sum is σ = 788297328. Its totient is φ = 167760000.

The previous prime is 420249187. The next prime is 420249283. The reversal of 420249250 is 52942024.

It can be written as a sum of positive squares in 8 ways, for example, as 93760489 + 326488761 = 9683^2 + 18069^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148852 + ... + 151648.

Almost surely, 2^420249250 is an apocalyptic number.

420249250 is a deficient number, since it is larger than the sum of its proper divisors (368048078).

420249250 is a wasteful number, since it uses less digits than its factorization.

420249250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415 (or 3405 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 420249250 is about 20499.9817073089. The cubic root of 420249250 is about 749.0353523979.

The spelling of 420249250 in words is "four hundred twenty million, two hundred forty-nine thousand, two hundred fifty".