1423642 has 16 divisors (see below), whose sum is σ = 2349792. Its totient is φ = 641520.

The previous prime is 1423637. The next prime is 1423663. The reversal of 1423642 is 2463241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a d-powerful number, because it can be written as 1 + 4⁸ + 2¹⁹ + 3⁶ + 6⁶ + 4⁹ + 2¹⁹ .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3388 + ... + 3784.

It is an arithmetic number, because the mean of its divisors is an integer number (146862).

2^1423642 is an apocalyptic number.

1423642 is a deficient number, since it is larger than the sum of its proper divisors (926150).

1423642 is a wasteful number, since it uses less digits than its factorization.

1423642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573.

The product of its digits is 1152, while the sum is 22.

The square root of 1423642 is about 1193.1646994443. The cubic root of 1423642 is about 112.4950977288.

Adding to 1423642 its reverse (2463241), we get a palindrome (3886883).

The spelling of 1423642 in words is "one million, four hundred twenty-three thousand, six hundred forty-two".