240743641 has 2 divisors, whose sum is σ = 240743642. Its totient is φ = 240743640.

The previous prime is 240743639. The next prime is 240743669. The reversal of 240743641 is 146347042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238054041 + 2689600 = 15429^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 240743641 - 2¹ = 240743639 is a prime.

Together with 240743639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (240743611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120371820 + 120371821.

It is an arithmetic number, because the mean of its divisors is an integer number (120371821).

Almost surely, 2^240743641 is an apocalyptic number.

It is an amenable number.

240743641 is a deficient number, since it is larger than the sum of its proper divisors (1).

240743641 is an equidigital number, since it uses as much as digits as its factorization.

240743641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 240743641 is about 15515.9157319186. The cubic root of 240743641 is about 622.0876909275.

The spelling of 240743641 in words is "two hundred forty million, seven hundred forty-three thousand, six hundred forty-one".