1420520 has 32 divisors (see below), whose sum is σ = 3385800. Its totient is φ = 534528.

The previous prime is 1420519. The next prime is 1420561. The reversal of 1420520 is 250241.

It can be written as a sum of positive squares in 4 ways, for example, as 1406596 + 13924 = 1186^2 + 118^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1420495 and 1420504.

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 7 ways as a sum of consecutive naturals, for example, 365 + ... + 1724.

2^1420520 is an apocalyptic number.

1420520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420520 is an abundant number, since it is smaller than the sum of its proper divisors (1965280).

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

1420520 is a wasteful number, since it uses less digits than its factorization.

1420520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 1420520 is about 1191.8556959632. The cubic root of 1420520 is about 112.4128048633.

Adding to 1420520 its reverse (250241), we get a palindrome (1670761).

The spelling of 1420520 in words is "one million, four hundred twenty thousand, five hundred twenty".