1420321320 has 96 divisors (see below), whose sum is σ = 5035698720. Its totient is φ = 344319360.

The previous prime is 1420321319. The next prime is 1420321367. The reversal of 1420321320 is 231230241.

1420321320 is a `hidden beast` number, since 1 + 4 + 20 + 321 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1420321293 and 1420321302.

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 23 ways as a sum of consecutive naturals, for example, 175374 + ... + 183293.

It is an arithmetic number, because the mean of its divisors is an integer number (52455195).

Almost surely, 2^1420321320 is an apocalyptic number.

1420321320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420321320 is an abundant number, since it is smaller than the sum of its proper divisors (3615377400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1420321320 is a wasteful number, since it uses less digits than its factorization.

1420321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358695 (or 358688 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1420321320 is about 37687.1505953952. The cubic root of 1420321320 is about 1124.0756377379.

Adding to 1420321320 its reverse (231230241), we get a palindrome (1651551561).

The spelling of 1420321320 in words is "one billion, four hundred twenty million, three hundred twenty-one thousand, three hundred twenty".