420068436 has 72 divisors (see below), whose sum is σ = 1059371040. Its totient is φ = 129489408.

The previous prime is 420068431. The next prime is 420068443. The reversal of 420068436 is 634860024.

It is a junction number, because it is equal to n+sod(n) for n = 420068397 and 420068406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420068431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203586 + ... + 205638.

Almost surely, 2^420068436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420068436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529685520).

420068436 is an abundant number, since it is smaller than the sum of its proper divisors (639302604).

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

420068436 is a wasteful number, since it uses less digits than its factorization.

420068436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2153 (or 2134 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 420068436 is about 20495.5711313444. The cubic root of 420068436 is about 748.9279117883.

The spelling of 420068436 in words is "four hundred twenty million, sixty-eight thousand, four hundred thirty-six".