420880078 has 8 divisors (see below), whose sum is σ = 631407168. Its totient is φ = 210411024.

The previous prime is 420880051. The next prime is 420880079. The reversal of 420880078 is 870088024.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420880079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21250 + ... + 35962.

It is an arithmetic number, because the mean of its divisors is an integer number (78925896).

Almost surely, 2^420880078 is an apocalyptic number.

420880078 is a deficient number, since it is larger than the sum of its proper divisors (210527090).

420880078 is a wasteful number, since it uses less digits than its factorization.

420880078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29018.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 420880078 is about 20515.3620002183. The cubic root of 420880078 is about 749.4099525063.

The spelling of 420880078 in words is "four hundred twenty million, eight hundred eighty thousand, seventy-eight".