1240412520 has 64 divisors (see below), whose sum is σ = 3757403520. Its totient is φ = 327561984.

The previous prime is 1240412513. The next prime is 1240412521. The reversal of 1240412520 is 252140421.

1240412520 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1240412521) 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, 37819 + ... + 62538.

It is an arithmetic number, because the mean of its divisors is an integer number (58709430).

Almost surely, 2^1240412520 is an apocalyptic number.

1240412520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240412520 is an abundant number, since it is smaller than the sum of its proper divisors (2516991000).

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

1240412520 is a wasteful number, since it uses less digits than its factorization.

1240412520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100474 (or 100470 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1240412520 is about 35219.4906266402. The cubic root of 1240412520 is about 1074.4561936749.

Adding to 1240412520 its reverse (252140421), we get a palindrome (1492552941).

The spelling of 1240412520 in words is "one billion, two hundred forty million, four hundred twelve thousand, five hundred twenty".