1420646 has 4 divisors (see below), whose sum is σ = 2130972. Its totient is φ = 710322.

The previous prime is 1420633. The next prime is 1420651. The reversal of 1420646 is 6460241.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355160 + ... + 355163.

It is an arithmetic number, because the mean of its divisors is an integer number (532743).

2^1420646 is an apocalyptic number.

1420646 is a deficient number, since it is larger than the sum of its proper divisors (710326).

1420646 is an equidigital number, since it uses as much as digits as its factorization.

1420646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710325.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1420646 is about 1191.9085535392. The cubic root of 1420646 is about 112.4161284337.

Adding to 1420646 its reverse (6460241), we get a palindrome (7880887).

The spelling of 1420646 in words is "one million, four hundred twenty thousand, six hundred forty-six".