1420306 has 8 divisors (see below), whose sum is σ = 2145024. Its totient is φ = 705300.

The previous prime is 1420303. The next prime is 1420357. The reversal of 1420306 is 6030241.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420306.

It is not an unprimeable number, because it can be changed into a prime (1420301) 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, 2050 + ... + 2653.

It is an arithmetic number, because the mean of its divisors is an integer number (268128).

2^1420306 is an apocalyptic number.

1420306 is a deficient number, since it is larger than the sum of its proper divisors (724718).

1420306 is a wasteful number, since it uses less digits than its factorization.

1420306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4856.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1420306 is about 1191.7659166128. The cubic root of 1420306 is about 112.4071596187.

Adding to 1420306 its reverse (6030241), we get a palindrome (7450547).

The spelling of 1420306 in words is "one million, four hundred twenty thousand, three hundred six".