1420320646 has 8 divisors (see below), whose sum is σ = 2203945920. Its totient is φ = 685672008.

The previous prime is 1420320637. The next prime is 1420320653. The reversal of 1420320646 is 6460230241.

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

It is a congruent number.

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, 12244086 + ... + 12244201.

It is an arithmetic number, because the mean of its divisors is an integer number (275493240).

Almost surely, 2^1420320646 is an apocalyptic number.

1420320646 is a deficient number, since it is larger than the sum of its proper divisors (783625274).

1420320646 is a wasteful number, since it uses less digits than its factorization.

1420320646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24488318.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1420320646 is about 37687.1416533544. The cubic root of 1420320646 is about 1124.0754599314.

Adding to 1420320646 its reverse (6460230241), we get a palindrome (7880550887).

The spelling of 1420320646 in words is "one billion, four hundred twenty million, three hundred twenty thousand, six hundred forty-six".