1421746 has 4 divisors (see below), whose sum is σ = 2132622. Its totient is φ = 710872.

The previous prime is 1421741. The next prime is 1421747. The reversal of 1421746 is 6471241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6471241 = 7 ⋅924463.

It can be written as a sum of positive squares in only one way, i.e., 1079521 + 342225 = 1039^2 + 585^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1421746.

It is not an unprimeable number, because it can be changed into a prime (1421741) 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 as a sum of consecutive naturals, namely, 355435 + ... + 355438.

2^1421746 is an apocalyptic number.

1421746 is a deficient number, since it is larger than the sum of its proper divisors (710876).

1421746 is an equidigital number, since it uses as much as digits as its factorization.

1421746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710875.

The product of its digits is 1344, while the sum is 25.

The square root of 1421746 is about 1192.3699090467. The cubic root of 1421746 is about 112.4451353876.

Adding to 1421746 its reverse (6471241), we get a palindrome (7892987).

The spelling of 1421746 in words is "one million, four hundred twenty-one thousand, seven hundred forty-six".