420432668928 has 54 divisors (see below), whose sum is σ = 1212211039494. Its totient is φ = 140144222208.

The previous prime is 420432668927. The next prime is 420432668963. The reversal of 420432668928 is 829866234024.

It can be written as a sum of positive squares in only one way, i.e., 223040841984 + 197391826944 = 472272^2 + 444288^2 .

It is not an unprimeable number, because it can be changed into a prime (420432668927) 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, 91237425 + ... + 91242032.

Almost surely, 2^420432668928 is an apocalyptic number.

420432668928 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

420432668928 is an abundant number, since it is smaller than the sum of its proper divisors (791778370566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420432668928 is a wasteful number, since it uses less digits than its factorization.

420432668928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182479479 (or 182479462 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 420432668928 in words is "four hundred twenty billion, four hundred thirty-two million, six hundred sixty-eight thousand, nine hundred twenty-eight".