420284786 has 8 divisors (see below), whose sum is σ = 630906240. Its totient is φ = 209982708.

The previous prime is 420284779. The next prime is 420284861. The reversal of 420284786 is 687482024.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76526 + ... + 81833.

It is an arithmetic number, because the mean of its divisors is an integer number (78863280).

Almost surely, 2^420284786 is an apocalyptic number.

420284786 is a deficient number, since it is larger than the sum of its proper divisors (210621454).

420284786 is a wasteful number, since it uses less digits than its factorization.

420284786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159688.

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 420284786 is about 20500.8484214678. The cubic root of 420284786 is about 749.0564644483.

It can be divided in two parts, 4202 and 84786, that added together give a palindrome (88988).

The spelling of 420284786 in words is "four hundred twenty million, two hundred eighty-four thousand, seven hundred eighty-six".