1442720 has 48 divisors (see below), whose sum is σ = 3483648. Its totient is φ = 564480.

The previous prime is 1442717. The next prime is 1442723. The reversal of 1442720 is 272441.

It is an interprime number because it is at equal distance from previous prime (1442717) and next prime (1442723).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1442692 and 1442701.

It is not an unprimeable number, because it can be changed into a prime (1442723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11297 + ... + 11423.

It is an arithmetic number, because the mean of its divisors is an integer number (72576).

2^1442720 is an apocalyptic number.

1442720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1442720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741824).

1442720 is an abundant number, since it is smaller than the sum of its proper divisors (2040928).

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

1442720 is a wasteful number, since it uses less digits than its factorization.

1442720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 1442720 is about 1201.1327986530. The cubic root of 1442720 is about 112.9953792456.

The spelling of 1442720 in words is "one million, four hundred forty-two thousand, seven hundred twenty".