1420533 has 6 divisors (see below), whose sum is σ = 2051894. Its totient is φ = 947016.

The previous prime is 1420519. The next prime is 1420561. The reversal of 1420533 is 3350241.

It can be written as a sum of positive squares in only one way, i.e., 1397124 + 23409 = 1182^2 + 153^2 .

It is not a de Polignac number, because 1420533 - 2⁵ = 1420501 is a prime.

It is a Duffinian number.

It is a Curzon number.

1420533 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78910 + ... + 78927.

2^1420533 is an apocalyptic number.

It is an amenable number.

1420533 is a deficient number, since it is larger than the sum of its proper divisors (631361).

1420533 is a wasteful number, since it uses less digits than its factorization.

1420533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157843 (or 157840 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1420533 is about 1191.8611496311. The cubic root of 1420533 is about 112.4131477804.

Adding to 1420533 its reverse (3350241), we get a palindrome (4770774).

It can be divided in two parts, 1420 and 533, that added together give a triangular number (1953 = T₆₂).

The spelling of 1420533 in words is "one million, four hundred twenty thousand, five hundred thirty-three".