421042281650 has 12 divisors (see below), whose sum is σ = 783138643962. Its totient is φ = 168416912640.

The previous prime is 421042281601. The next prime is 421042281659. The reversal of 421042281650 is 56182240124.

It can be written as a sum of positive squares in 3 ways, for example, as 361923763201 + 59118518449 = 601601^2 + 243143^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 421042281650.

It is not an unprimeable number, because it can be changed into a prime (421042281659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4210422767 + ... + 4210422866.

Almost surely, 2^421042281650 is an apocalyptic number.

421042281650 is a deficient number, since it is larger than the sum of its proper divisors (362096362312).

421042281650 is a wasteful number, since it uses less digits than its factorization.

421042281650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8420845645 (or 8420845640 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The spelling of 421042281650 in words is "four hundred twenty-one billion, forty-two million, two hundred eighty-one thousand, six hundred fifty".