420919340 has 24 divisors (see below), whose sum is σ = 914412240. Its totient is φ = 162561728.

The previous prime is 420919339. The next prime is 420919379. The reversal of 420919340 is 43919024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 420919297 and 420919306.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 362282 + ... + 363441.

It is an arithmetic number, because the mean of its divisors is an integer number (38100510).

Almost surely, 2^420919340 is an apocalyptic number.

It is an amenable number.

420919340 is an abundant number, since it is smaller than the sum of its proper divisors (493492900).

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

420919340 is a wasteful number, since it uses less digits than its factorization.

420919340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725761 (or 725759 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 420919340 is about 20516.3188705966. The cubic root of 420919340 is about 749.4332548040.

The spelling of 420919340 in words is "four hundred twenty million, nine hundred nineteen thousand, three hundred forty".