1402565 has 4 divisors (see below), whose sum is σ = 1683084. Its totient is φ = 1122048.

The previous prime is 1402547. The next prime is 1402567. The reversal of 1402565 is 5652041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5652041 = 17 ⋅332473.

It can be written as a sum of positive squares in 2 ways, for example, as 145924 + 1256641 = 382^2 + 1121^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402565 - 2⁶ = 1402501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1402565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402567) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 140252 + ... + 140261.

It is an arithmetic number, because the mean of its divisors is an integer number (420771).

2^1402565 is an apocalyptic number.

It is an amenable number.

1402565 is a deficient number, since it is larger than the sum of its proper divisors (280519).

1402565 is an equidigital number, since it uses as much as digits as its factorization.

1402565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280518.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1402565 is about 1184.2993709363. The cubic root of 1402565 is about 111.9371724584.

The spelling of 1402565 in words is "one million, four hundred two thousand, five hundred sixty-five".