1243010240 has 28 divisors (see below), whose sum is σ = 2959918896. Its totient is φ = 497203968.

The previous prime is 1243010231. The next prime is 1243010261. The reversal of 1243010240 is 420103421.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1941884 + ... + 1942523.

Almost surely, 2^1243010240 is an apocalyptic number.

1243010240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243010240 is an abundant number, since it is smaller than the sum of its proper divisors (1716908656).

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

1243010240 is an equidigital number, since it uses as much as digits as its factorization.

1243010240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884424 (or 3884414 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1243010240 is about 35256.3503499724. The cubic root of 1243010240 is about 1075.2057266265.

Adding to 1243010240 its reverse (420103421), we get a palindrome (1663113661).

The spelling of 1243010240 in words is "one billion, two hundred forty-three million, ten thousand, two hundred forty".