1240340560 has 40 divisors (see below), whose sum is σ = 2890752480. Its totient is φ = 494938752.

The previous prime is 1240340557. The next prime is 1240340593. The reversal of 1240340560 is 650430421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1240340560² = 3076889409562227200, which contains 22 as substring.

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, 15019 + ... + 52021.

It is an arithmetic number, because the mean of its divisors is an integer number (72268812).

Almost surely, 2^1240340560 is an apocalyptic number.

1240340560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240340560 is an abundant number, since it is smaller than the sum of its proper divisors (1650411920).

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

1240340560 is a wasteful number, since it uses less digits than its factorization.

1240340560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37435 (or 37429 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1240340560 is about 35218.4690184000. The cubic root of 1240340560 is about 1074.4354158123.

Adding to 1240340560 its reverse (650430421), we get a palindrome (1890770981).

The spelling of 1240340560 in words is "one billion, two hundred forty million, three hundred forty thousand, five hundred sixty".