1240354201 has 4 divisors (see below), whose sum is σ = 1244832292. Its totient is φ = 1235876112.

The previous prime is 1240354163. The next prime is 1240354207. The reversal of 1240354201 is 1024530421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 470846601 + 769507600 = 21699^2 + 27740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240354201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240354207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2238630 + ... + 2239183.

It is an arithmetic number, because the mean of its divisors is an integer number (311208073).

Almost surely, 2^1240354201 is an apocalyptic number.

It is an amenable number.

1240354201 is a deficient number, since it is larger than the sum of its proper divisors (4478091).

1240354201 is an equidigital number, since it uses as much as digits as its factorization.

1240354201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478090.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1240354201 is about 35218.6626804596. The cubic root of 1240354201 is about 1074.4393546014.

Adding to 1240354201 its reverse (1024530421), we get a palindrome (2264884622).

The spelling of 1240354201 in words is "one billion, two hundred forty million, three hundred fifty-four thousand, two hundred one".