1402813 has 4 divisors (see below), whose sum is σ = 1405948. Its totient is φ = 1399680.

The previous prime is 1402811. The next prime is 1402829. The reversal of 1402813 is 3182041.

1402813 = 837² + 838².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 702244 + 700569 = 838^2 + 837^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402813 - 2¹ = 1402811 is a prime.

It is a Duffinian number.

1402813 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402811) 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, 756 + ... + 1837.

It is an arithmetic number, because the mean of its divisors is an integer number (351487).

2^1402813 is an apocalyptic number.

1402813 is the 838-th centered square number.

It is an amenable number.

1402813 is a deficient number, since it is larger than the sum of its proper divisors (3135).

1402813 is an equidigital number, since it uses as much as digits as its factorization.

1402813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3134.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1402813 is about 1184.4040695641. The cubic root of 1402813 is about 111.9437696055.

Adding to 1402813 its reverse (3182041), we get a palindrome (4584854).

It can be divided in two parts, 14028 and 13, that added together give a palindrome (14041).

The spelling of 1402813 in words is "one million, four hundred two thousand, eight hundred thirteen".