1240201520 has 40 divisors (see below), whose sum is σ = 2961407184. Its totient is φ = 482671872.

The previous prime is 1240201519. The next prime is 1240201541. The reversal of 1240201520 is 251020421.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206534 + ... + 212453.

Almost surely, 2^1240201520 is an apocalyptic number.

1240201520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240201520 is an abundant number, since it is smaller than the sum of its proper divisors (1721205664).

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

1240201520 is a wasteful number, since it uses less digits than its factorization.

1240201520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419037 (or 419031 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1240201520 is about 35216.4949987928. The cubic root of 1240201520 is about 1074.3952668705.

Adding to 1240201520 its reverse (251020421), we get a palindrome (1491221941).

The spelling of 1240201520 in words is "one billion, two hundred forty million, two hundred one thousand, five hundred twenty".