420367942709 has 24 divisors (see below), whose sum is σ = 498841843416. Its totient is φ = 351876096000.

The previous prime is 420367942703. The next prime is 420367942711. The reversal of 420367942709 is 907249763024.

It can be written as a sum of positive squares in 4 ways, for example, as 104040437809 + 316327504900 = 322553^2 + 562430^2 .

It is not a de Polignac number, because 420367942709 - 2⁴ = 420367942693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420367942703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297557 + ... + 963989.

It is an arithmetic number, because the mean of its divisors is an integer number (20785076809).

Almost surely, 2^420367942709 is an apocalyptic number.

It is an amenable number.

420367942709 is a deficient number, since it is larger than the sum of its proper divisors (78473900707).

420367942709 is a wasteful number, since it uses less digits than its factorization.

420367942709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666869 (or 666858 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 53.

The spelling of 420367942709 in words is "four hundred twenty billion, three hundred sixty-seven million, nine hundred forty-two thousand, seven hundred nine".