1240045105 has 24 divisors (see below), whose sum is σ = 1663338240. Its totient is φ = 886167360.

The previous prime is 1240045097. The next prime is 1240045109. The reversal of 1240045105 is 5015400421.

It is not a de Polignac number, because 1240045105 - 2³ = 1240045097 is a prime.

It is a super-2 number, since 2×1240045105² = 3075423724868922050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1240045109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2526 + ... + 49864.

It is an arithmetic number, because the mean of its divisors is an integer number (69305760).

Almost surely, 2^1240045105 is an apocalyptic number.

It is an amenable number.

1240045105 is a deficient number, since it is larger than the sum of its proper divisors (423293135).

1240045105 is a wasteful number, since it uses less digits than its factorization.

1240045105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47401 (or 47388 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1240045105 is about 35214.2741654574. The cubic root of 1240045105 is about 1074.3500971680.

Adding to 1240045105 its reverse (5015400421), we get a palindrome (6255445526).

The spelling of 1240045105 in words is "one billion, two hundred forty million, forty-five thousand, one hundred five".