240145441 has 4 divisors (see below), whose sum is σ = 240216084. Its totient is φ = 240074800.

The previous prime is 240145403. The next prime is 240145457. The reversal of 240145441 is 144541042.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144541042 = 2 ⋅72270521.

It can be written as a sum of positive squares in 2 ways, for example, as 153264400 + 86881041 = 12380^2 + 9321^2 .

It is a cyclic number.

It is not a de Polignac number, because 240145441 - 2⁹ = 240144929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240145481) 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, 29950 + ... + 37111.

It is an arithmetic number, because the mean of its divisors is an integer number (60054021).

Almost surely, 2^240145441 is an apocalyptic number.

It is an amenable number.

240145441 is a deficient number, since it is larger than the sum of its proper divisors (70643).

240145441 is an equidigital number, since it uses as much as digits as its factorization.

240145441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70642.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 240145441 is about 15496.6267619763. The cubic root of 240145441 is about 621.5720088978.

Adding to 240145441 its reverse (144541042), we get a palindrome (384686483).

The spelling of 240145441 in words is "two hundred forty million, one hundred forty-five thousand, four hundred forty-one".