240785047 has 4 divisors (see below), whose sum is σ = 240823840. Its totient is φ = 240746256.

The previous prime is 240785021. The next prime is 240785107. The reversal of 240785047 is 740587042.

It is a semiprime because it is the product of two primes.

It is a 4-Lehmer number, since φ(240785047) divides (240785047-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 240785047 - 2¹⁵ = 240752279 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 240784997 and 240785015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240785147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7758 + ... + 23275.

It is an arithmetic number, because the mean of its divisors is an integer number (60205960).

It is a Poulet number, since it divides 2^240785046-1.

Almost surely, 2^240785047 is an apocalyptic number.

240785047 is the 7759-th decagonal number.

240785047 is a deficient number, since it is larger than the sum of its proper divisors (38793).

240785047 is an equidigital number, since it uses as much as digits as its factorization.

240785047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38792.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 240785047 is about 15517.2499818750. The cubic root of 240785047 is about 622.1233536020.

The spelling of 240785047 in words is "two hundred forty million, seven hundred eighty-five thousand, forty-seven".