1420280 has 16 divisors (see below), whose sum is σ = 3195720. Its totient is φ = 568096.

The previous prime is 1420277. The next prime is 1420283. The reversal of 1420280 is 820241.

It is an interprime number because it is at equal distance from previous prime (1420277) and next prime (1420283).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17714 + ... + 17793.

2^1420280 is an apocalyptic number.

1420280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420280 is an abundant number, since it is smaller than the sum of its proper divisors (1775440).

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

1420280 is a wasteful number, since it uses less digits than its factorization.

1420280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35518 (or 35514 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1420280 is about 1191.7550083805. The cubic root of 1420280 is about 112.4064737093.

The spelling of 1420280 in words is "one million, four hundred twenty thousand, two hundred eighty".