1240243000 has 64 divisors (see below), whose sum is σ = 3002313600. Its totient is φ = 478979200.

The previous prime is 1240242977. The next prime is 1240243001. The reversal of 1240243000 is 3420421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240243001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7617 + ... + 50383.

It is an arithmetic number, because the mean of its divisors is an integer number (46911150).

Almost surely, 2^1240243000 is an apocalyptic number.

1240243000 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 1240243000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1501156800).

1240243000 is an abundant number, since it is smaller than the sum of its proper divisors (1762070600).

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

1240243000 is a wasteful number, since it uses less digits than its factorization.

1240243000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42817 (or 42803 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1240243000 is about 35217.0839224374. The cubic root of 1240243000 is about 1074.4072448752.

Adding to 1240243000 its reverse (3420421), we get a palindrome (1243663421).

The spelling of 1240243000 in words is "one billion, two hundred forty million, two hundred forty-three thousand".