1243580 has 24 divisors (see below), whose sum is σ = 2812992. Its totient is φ = 459072.

The previous prime is 1243579. The next prime is 1243609. The reversal of 1243580 is 853421.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2132 + ... + 2651.

It is an arithmetic number, because the mean of its divisors is an integer number (117208).

2^1243580 is an apocalyptic number.

1243580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243580 is an abundant number, since it is smaller than the sum of its proper divisors (1569412).

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

1243580 is a wasteful number, since it uses less digits than its factorization.

1243580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805 (or 4803 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1243580 is about 1115.1591814624. The cubic root of 1243580 is about 107.5369982618.

The spelling of 1243580 in words is "one million, two hundred forty-three thousand, five hundred eighty".