1245302145 has 24 divisors (see below), whose sum is σ = 2208725376. Its totient is φ = 648714528.

The previous prime is 1245302131. The next prime is 1245302153. The reversal of 1245302145 is 5412035421.

1245302145 is a `hidden beast` number, since 124 + 530 + 2 + 1 + 4 + 5 = 666.

It is not a de Polignac number, because 1245302145 - 2¹² = 1245298049 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319849 + ... + 323718.

It is an arithmetic number, because the mean of its divisors is an integer number (92030224).

Almost surely, 2^1245302145 is an apocalyptic number.

1245302145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245302145 is a deficient number, since it is larger than the sum of its proper divisors (963423231).

1245302145 is a wasteful number, since it uses less digits than its factorization.

1245302145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643621 (or 643618 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1245302145 is about 35288.8388162603. The cubic root of 1245302145 is about 1075.8661546431.

Adding to 1245302145 its reverse (5412035421), we get a palindrome (6657337566).

The spelling of 1245302145 in words is "one billion, two hundred forty-five million, three hundred two thousand, one hundred forty-five".