420078996 has 36 divisors (see below), whose sum is σ = 1064673792. Its totient is φ = 139656144.

The previous prime is 420078979. The next prime is 420079003. The reversal of 420078996 is 699870024.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1446 + ... + 29021.

It is an arithmetic number, because the mean of its divisors is an integer number (29574272).

Almost surely, 2^420078996 is an apocalyptic number.

It is an amenable number.

420078996 is an abundant number, since it is smaller than the sum of its proper divisors (644594796).

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

420078996 is a wasteful number, since it uses less digits than its factorization.

420078996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30860 (or 30855 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 420078996 is about 20495.8287463571. The cubic root of 420078996 is about 748.9341874423.

The spelling of 420078996 in words is "four hundred twenty million, seventy-eight thousand, nine hundred ninety-six".