1420844 has 6 divisors (see below), whose sum is σ = 2486484. Its totient is φ = 710420.

The previous prime is 1420841. The next prime is 1420847. The reversal of 1420844 is 4480241.

It is an interprime number because it is at equal distance from previous prime (1420841) and next prime (1420847).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1420841) 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, 177602 + ... + 177609.

It is an arithmetic number, because the mean of its divisors is an integer number (414414).

2^1420844 is an apocalyptic number.

It is an amenable number.

1420844 is a deficient number, since it is larger than the sum of its proper divisors (1065640).

1420844 is a wasteful number, since it uses less digits than its factorization.

1420844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355215 (or 355213 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1420844 is about 1191.9916107087. The cubic root of 1420844 is about 112.4213507901.

The spelling of 1420844 in words is "one million, four hundred twenty thousand, eight hundred forty-four".