1420064 has 24 divisors (see below), whose sum is σ = 2822400. Its totient is φ = 703296.

The previous prime is 1420063. The next prime is 1420073. The reversal of 1420064 is 4600241.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420063) 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, 6257 + ... + 6479.

It is an arithmetic number, because the mean of its divisors is an integer number (117600).

2^1420064 is an apocalyptic number.

It is an amenable number.

1420064 is a deficient number, since it is larger than the sum of its proper divisors (1402336).

1420064 is a wasteful number, since it uses less digits than its factorization.

1420064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1420064 is about 1191.6643822822. The cubic root of 1420064 is about 112.4007750608.

The spelling of 1420064 in words is "one million, four hundred twenty thousand, sixty-four".