1240228735 has 4 divisors (see below), whose sum is σ = 1488274488. Its totient is φ = 992182984.

The previous prime is 1240228723. The next prime is 1240228739. The reversal of 1240228735 is 5378220421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1240228735 - 2¹³ = 1240220543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1240228735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240228739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124022869 + ... + 124022878.

It is an arithmetic number, because the mean of its divisors is an integer number (372068622).

Almost surely, 2^1240228735 is an apocalyptic number.

1240228735 is a deficient number, since it is larger than the sum of its proper divisors (248045753).

1240228735 is an equidigital number, since it uses as much as digits as its factorization.

1240228735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248045752.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 1240228735 is about 35216.8813923096. The cubic root of 1240228735 is about 1074.4031256614.

The spelling of 1240228735 in words is "one billion, two hundred forty million, two hundred twenty-eight thousand, seven hundred thirty-five".