1403020 has 48 divisors (see below), whose sum is σ = 3175200. Its totient is φ = 519680.

The previous prime is 1403009. The next prime is 1403021. The reversal of 1403020 is 203041.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1402988 and 1403006.

It is not an unprimeable number, because it can be changed into a prime (1403021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23751 + ... + 23809.

It is an arithmetic number, because the mean of its divisors is an integer number (66150).

2^1403020 is an apocalyptic number.

1403020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1403020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1587600).

1403020 is an abundant number, since it is smaller than the sum of its proper divisors (1772180).

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

1403020 is a wasteful number, since it uses less digits than its factorization.

1403020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 1403020 is about 1184.4914520586. The cubic root of 1403020 is about 111.9492754999.

Adding to 1403020 its reverse (203041), we get a palindrome (1606061).

It can be divided in two parts, 140 and 3020, that added together give a triangular number (3160 = T₇₉).

The spelling of 1403020 in words is "one million, four hundred three thousand, twenty".