1539240241 has 16 divisors (see below), whose sum is σ = 1980960768. Its totient is φ = 1160715600.

The previous prime is 1539240239. The next prime is 1539240253. The reversal of 1539240241 is 1420429351.

It is not a de Polignac number, because 1539240241 - 2¹ = 1539240239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1539240281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320035 + ... + 324808.

It is an arithmetic number, because the mean of its divisors is an integer number (123810048).

Almost surely, 2^1539240241 is an apocalyptic number.

1539240241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1539240241 is a deficient number, since it is larger than the sum of its proper divisors (441720527).

1539240241 is a wasteful number, since it uses less digits than its factorization.

1539240241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644892.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1539240241 is about 39233.1523204547. The cubic root of 1539240241 is about 1154.6104121352.

Adding to 1539240241 its reverse (1420429351), we get a palindrome (2959669592).

The spelling of 1539240241 in words is "one billion, five hundred thirty-nine million, two hundred forty thousand, two hundred forty-one".