1240334401 has 4 divisors (see below), whose sum is σ = 1240992900. Its totient is φ = 1239675904.

The previous prime is 1240334377. The next prime is 1240334423. The reversal of 1240334401 is 1044330421.

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 294156801 + 946177600 = 17151^2 + 30760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240334401 - 2⁵ = 1240334369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240334471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326416 + ... + 330193.

It is an arithmetic number, because the mean of its divisors is an integer number (310248225).

Almost surely, 2^1240334401 is an apocalyptic number.

It is an amenable number.

1240334401 is a deficient number, since it is larger than the sum of its proper divisors (658499).

1240334401 is an equidigital number, since it uses as much as digits as its factorization.

1240334401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658498.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1240334401 is about 35218.3815783747. The cubic root of 1240334401 is about 1074.4336374139.

Adding to 1240334401 its reverse (1044330421), we get a palindrome (2284664822).

The spelling of 1240334401 in words is "one billion, two hundred forty million, three hundred thirty-four thousand, four hundred one".