1245104505 has 24 divisors (see below), whose sum is σ = 2165235072. Its totient is φ = 661885344.

The previous prime is 1245104503. The next prime is 1245104519. The reversal of 1245104505 is 5054015421.

1245104505 is a `hidden beast` number, since 12 + 45 + 104 + 505 = 666.

It is not a de Polignac number, because 1245104505 - 2¹ = 1245104503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1245104503) 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, 31249 + ... + 58878.

It is an arithmetic number, because the mean of its divisors is an integer number (90218128).

Almost surely, 2^1245104505 is an apocalyptic number.

1245104505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245104505 is a deficient number, since it is larger than the sum of its proper divisors (920130567).

1245104505 is a wasteful number, since it uses less digits than its factorization.

1245104505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90445 (or 90442 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1245104505 is about 35286.0383863080. The cubic root of 1245104505 is about 1075.8092352741.

Adding to 1245104505 its reverse (5054015421), we get a palindrome (6299119926).

The spelling of 1245104505 in words is "one billion, two hundred forty-five million, one hundred four thousand, five hundred five".