420684268870 has 32 divisors (see below), whose sum is σ = 782364540672. Its totient is φ = 162764616672.

The previous prime is 420684268847. The next prime is 420684268877. The reversal of 420684268870 is 78862486024.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420684268877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4704912 + ... + 4793491.

It is an arithmetic number, because the mean of its divisors is an integer number (24448891896).

Almost surely, 2^420684268870 is an apocalyptic number.

420684268870 is a deficient number, since it is larger than the sum of its proper divisors (361680271802).

420684268870 is a wasteful number, since it uses less digits than its factorization.

420684268870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9498556.

The product of its (nonzero) digits is 8257536, while the sum is 55.

The spelling of 420684268870 in words is "four hundred twenty billion, six hundred eighty-four million, two hundred sixty-eight thousand, eight hundred seventy".