420941078 has 8 divisors (see below), whose sum is σ = 658864368. Its totient is φ = 201319624.

The previous prime is 420941077. The next prime is 420941089. The reversal of 420941078 is 870149024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×420941078² = 354382782295604168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420941077) 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 3 ways as a sum of consecutive naturals, for example, 4575401 + ... + 4575492.

It is an arithmetic number, because the mean of its divisors is an integer number (82358046).

Almost surely, 2^420941078 is an apocalyptic number.

420941078 is a deficient number, since it is larger than the sum of its proper divisors (237923290).

420941078 is a wasteful number, since it uses less digits than its factorization.

420941078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9150918.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 420941078 is about 20516.8486371567. The cubic root of 420941078 is about 749.4461558503.

The spelling of 420941078 in words is "four hundred twenty million, nine hundred forty-one thousand, seventy-eight".