1242546747546 has 32 divisors (see below), whose sum is σ = 2682350858880. Its totient is φ = 381451172544.

The previous prime is 1242546747523. The next prime is 1242546747571. The reversal of 1242546747546 is 6457476452421.

It is a happy number.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18109365 + ... + 18177848.

It is an arithmetic number, because the mean of its divisors is an integer number (83823464340).

Almost surely, 2^{1242546747546} is an apocalyptic number.

1242546747546 is an abundant number, since it is smaller than the sum of its proper divisors (1439804111334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242546747546 is a wasteful number, since it uses less digits than its factorization.

1242546747546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36287670.

The product of its digits is 45158400, while the sum is 57.

The spelling of 1242546747546 in words is "one trillion, two hundred forty-two billion, five hundred forty-six million, seven hundred forty-seven thousand, five hundred forty-six".