1240145204442 has 8 divisors (see below), whose sum is σ = 2480290408896. Its totient is φ = 413381734812.

The previous prime is 1240145204423. The next prime is 1240145204497. The reversal of 1240145204442 is 2444025410421.

It is a sphenic number, since it is the product of 3 distinct primes.

1240145204442 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 103345433698 + ... + 103345433709.

It is an arithmetic number, because the mean of its divisors is an integer number (310036301112).

Almost surely, 2^{1240145204442} is an apocalyptic number.

1240145204442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1240145204442 is a wasteful number, since it uses less digits than its factorization.

1240145204442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206690867412.

The product of its (nonzero) digits is 40960, while the sum is 33.

The spelling of 1240145204442 in words is "one trillion, two hundred forty billion, one hundred forty-five million, two hundred four thousand, four hundred forty-two".