421708780250 has 16 divisors (see below), whose sum is σ = 789438837096. Its totient is φ = 168683512000.

The previous prime is 421708780249. The next prime is 421708780307. The reversal of 421708780250 is 52087807124.

It can be written as a sum of positive squares in 4 ways, for example, as 49129165801 + 372579614449 = 221651^2 + 610393^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843417311 + ... + 843417810.

Almost surely, 2^421708780250 is an apocalyptic number.

421708780250 is a deficient number, since it is larger than the sum of its proper divisors (367730056846).

421708780250 is a wasteful number, since it uses less digits than its factorization.

421708780250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686835138 (or 1686835128 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 44.

The spelling of 421708780250 in words is "four hundred twenty-one billion, seven hundred eight million, seven hundred eighty thousand, two hundred fifty".