1240245105 has 32 divisors (see below), whose sum is σ = 2167769088. Its totient is φ = 600504000.

The previous prime is 1240245101. The next prime is 1240245109. The reversal of 1240245105 is 5015420421.

1240245105 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1240245101) and next prime (1240245109).

It is not a de Polignac number, because 1240245105 - 2² = 1240245101 is a prime.

It is a super-2 number, since 2×1240245105² = 3076415840952922050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1240245101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125080 + ... + 134630.

It is an arithmetic number, because the mean of its divisors is an integer number (67742784).

Almost surely, 2^1240245105 is an apocalyptic number.

1240245105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1240245105 is a deficient number, since it is larger than the sum of its proper divisors (927523983).

1240245105 is a wasteful number, since it uses less digits than its factorization.

1240245105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10357.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1240245105 is about 35217.1138084881. The cubic root of 1240245105 is about 1074.4078527200.

Adding to 1240245105 its reverse (5015420421), we get a palindrome (6255665526).

The spelling of 1240245105 in words is "one billion, two hundred forty million, two hundred forty-five thousand, one hundred five".