420921713389 has 8 divisors (see below), whose sum is σ = 435481040160. Its totient is φ = 406365372336.

The previous prime is 420921713383. The next prime is 420921713393. The reversal of 420921713389 is 983317129024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420921713389 - 2³⁵ = 386561975021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420921713383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457699 + ... + 1025344.

It is an arithmetic number, because the mean of its divisors is an integer number (54435130020).

Almost surely, 2^420921713389 is an apocalyptic number.

It is an amenable number.

420921713389 is a deficient number, since it is larger than the sum of its proper divisors (14559326771).

420921713389 is a wasteful number, since it uses less digits than its factorization.

420921713389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492859.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 420921713389 in words is "four hundred twenty billion, nine hundred twenty-one million, seven hundred thirteen thousand, three hundred eighty-nine".