240742881 has 8 divisors (see below), whose sum is σ = 356656160. Its totient is φ = 160495236.

The previous prime is 240742867. The next prime is 240742903. The reversal of 240742881 is 188247042.

It is not a de Polignac number, because 240742881 - 2⁵ = 240742849 is a prime.

It is a super-2 number, since 2×240742881² = 115914269504360322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240742841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4458175 + ... + 4458228.

It is an arithmetic number, because the mean of its divisors is an integer number (44582020).

Almost surely, 2^240742881 is an apocalyptic number.

It is an amenable number.

240742881 is a deficient number, since it is larger than the sum of its proper divisors (115913279).

240742881 is an equidigital number, since it uses as much as digits as its factorization.

240742881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8916412 (or 8916406 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 240742881 is about 15515.8912409181. The cubic root of 240742881 is about 622.0870363070.

The spelling of 240742881 in words is "two hundred forty million, seven hundred forty-two thousand, eight hundred eighty-one".