420374786 has 8 divisors (see below), whose sum is σ = 679067004. Its totient is φ = 194019120.

The previous prime is 420374771. The next prime is 420374813. The reversal of 420374786 is 687473024.

It can be written as a sum of positive squares in 2 ways, for example, as 417589225 + 2785561 = 20435^2 + 1669^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8084105 + ... + 8084156.

Almost surely, 2^420374786 is an apocalyptic number.

420374786 is a deficient number, since it is larger than the sum of its proper divisors (258692218).

420374786 is a wasteful number, since it uses less digits than its factorization.

420374786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16168276.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 420374786 is about 20503.0433350759. The cubic root of 420374786 is about 749.1099284109.

The spelling of 420374786 in words is "four hundred twenty million, three hundred seventy-four thousand, seven hundred eighty-six".