1242563035545 has 48 divisors (see below), whose sum is σ = 2319555026880. Its totient is φ = 611695905408.

The previous prime is 1242563035531. The next prime is 1242563035579. The reversal of 1242563035545 is 5455303652421.

1242563035545 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 5 + 630 + 3 + 5 + 5 + 4 + 5 = 666.

It is not a de Polignac number, because 1242563035545 - 2⁵ = 1242563035513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1242563035545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20797926 + ... + 20857584.

It is an arithmetic number, because the mean of its divisors is an integer number (48324063060).

Almost surely, 2^{1242563035545} is an apocalyptic number.

1242563035545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1242563035545 is a deficient number, since it is larger than the sum of its proper divisors (1076991991335).

1242563035545 is a wasteful number, since it uses less digits than its factorization.

1242563035545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95286 (or 95283 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

Adding to 1242563035545 its reverse (5455303652421), we get a palindrome (6697866687966).

The spelling of 1242563035545 in words is "one trillion, two hundred forty-two billion, five hundred sixty-three million, thirty-five thousand, five hundred forty-five".