1240345441 has 4 divisors (see below), whose sum is σ = 1305626800. Its totient is φ = 1175064084.

The previous prime is 1240345429. The next prime is 1240345459. The reversal of 1240345441 is 1445430421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1240345441 - 2⁹ = 1240344929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1240345411) 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, 32640651 + ... + 32640688.

It is an arithmetic number, because the mean of its divisors is an integer number (326406700).

Almost surely, 2^1240345441 is an apocalyptic number.

It is an amenable number.

1240345441 is a deficient number, since it is larger than the sum of its proper divisors (65281359).

1240345441 is an equidigital number, since it uses as much as digits as its factorization.

1240345441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65281358.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1240345441 is about 35218.5383143594. The cubic root of 1240345441 is about 1074.4368251866.

Adding to 1240345441 its reverse (1445430421), we get a palindrome (2685775862).

The spelling of 1240345441 in words is "one billion, two hundred forty million, three hundred forty-five thousand, four hundred forty-one".