1420560 has 60 divisors (see below), whose sum is σ = 4773132. Its totient is φ = 378624.

The previous prime is 1420519. The next prime is 1420561. The reversal of 1420560 is 650241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 404496 + 1016064 = 636^2 + 1008^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1420561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267 + ... + 1706.

2^1420560 is an apocalyptic number.

1420560 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 1420560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2386566).

1420560 is an abundant number, since it is smaller than the sum of its proper divisors (3352572).

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

1420560 is a wasteful number, since it uses less digits than its factorization.

1420560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992 (or 1983 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1420560 is about 1191.8724764001. The cubic root of 1420560 is about 112.4138599863.

The spelling of 1420560 in words is "one million, four hundred twenty thousand, five hundred sixty".