1403642 has 8 divisors (see below), whose sum is σ = 2114100. Its totient is φ = 698944.

The previous prime is 1403641. The next prime is 1403651. The reversal of 1403642 is 2463041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1301881 + 101761 = 1141^2 + 319^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (1403641) 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 3 ways as a sum of consecutive naturals, for example, 767 + ... + 1842.

2^1403642 is an apocalyptic number.

1403642 is a deficient number, since it is larger than the sum of its proper divisors (710458).

1403642 is a wasteful number, since it uses less digits than its factorization.

1403642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1403642 is about 1184.7539829011. The cubic root of 1403642 is about 111.9658165237.

Adding to 1403642 its reverse (2463041), we get a palindrome (3866683).

The spelling of 1403642 in words is "one million, four hundred three thousand, six hundred forty-two".