1240245445 has 16 divisors (see below), whose sum is σ = 1556467200. Its totient is φ = 946940544.

The previous prime is 1240245443. The next prime is 1240245469. The reversal of 1240245445 is 5445420421.

It is not a de Polignac number, because 1240245445 - 2¹ = 1240245443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240245443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40756 + ... + 64354.

It is an arithmetic number, because the mean of its divisors is an integer number (97279200).

Almost surely, 2^1240245445 is an apocalyptic number.

It is an amenable number.

1240245445 is a deficient number, since it is larger than the sum of its proper divisors (316221755).

1240245445 is a wasteful number, since it uses less digits than its factorization.

1240245445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24084.

The product of its (nonzero) digits is 25600, while the sum is 31.

The square root of 1240245445 is about 35217.1186356863. The cubic root of 1240245445 is about 1074.4079508992.

Adding to 1240245445 its reverse (5445420421), we get a palindrome (6685665866).

The spelling of 1240245445 in words is "one billion, two hundred forty million, two hundred forty-five thousand, four hundred forty-five".