240809541 has 16 divisors (see below), whose sum is σ = 367755264. Its totient is φ = 137302704.

The previous prime is 240809531. The next prime is 240809549. The reversal of 240809541 is 145908042.

It is not a de Polignac number, because 240809541 - 2¹⁰ = 240808517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240809549) 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, 2661 + ... + 22106.

It is an arithmetic number, because the mean of its divisors is an integer number (22984704).

Almost surely, 2^240809541 is an apocalyptic number.

240809541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

240809541 is a deficient number, since it is larger than the sum of its proper divisors (126945723).

240809541 is a wasteful number, since it uses less digits than its factorization.

240809541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25240.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 240809541 is about 15518.0392124778. The cubic root of 240809541 is about 622.1444481743.

The spelling of 240809541 in words is "two hundred forty million, eight hundred nine thousand, five hundred forty-one".