1240560 has 60 divisors (see below), whose sum is σ = 4168632. Its totient is φ = 330624.

The previous prime is 1240559. The next prime is 1240607. The reversal of 1240560 is 650421.

It is a happy number.

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

It is a super-2 number, since 2×1240560² = 3077978227200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142 + ... + 1581.

2^1240560 is an apocalyptic number.

1240560 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 1240560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2084316).

1240560 is an abundant number, since it is smaller than the sum of its proper divisors (2928072).

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

1240560 is a wasteful number, since it uses less digits than its factorization.

1240560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742 (or 1733 counting only the distinct ones).

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

The square root of 1240560 is about 1113.8042916060. The cubic root of 1240560 is about 107.4498774810.

Adding to 1240560 its reverse (650421), we get a palindrome (1890981).

The spelling of 1240560 in words is "one million, two hundred forty thousand, five hundred sixty".