1420144 has 20 divisors (see below), whose sum is σ = 3002040. Its totient is φ = 645440.

The previous prime is 1420123. The next prime is 1420151. The reversal of 1420144 is 4410241.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3859 + ... + 4210.

It is an arithmetic number, because the mean of its divisors is an integer number (150102).

2^1420144 is an apocalyptic number.

It is an amenable number.

1420144 is an abundant number, since it is smaller than the sum of its proper divisors (1581896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1420144 is a wasteful number, since it uses less digits than its factorization.

1420144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088 (or 8082 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1420144 is about 1191.6979483074. The cubic root of 1420144 is about 112.4028857387.

Adding to 1420144 its reverse (4410241), we get a palindrome (5830385).

It can be divided in two parts, 1420 and 144, that multiplied together give a triangular number (204480 = T₆₃₉).

The spelling of 1420144 in words is "one million, four hundred twenty thousand, one hundred forty-four".