1254344816642 has 16 divisors (see below), whose sum is σ = 1914070633920. Its totient is φ = 616328641968.

The previous prime is 1254344816623. The next prime is 1254344816663. The reversal of 1254344816642 is 2466184434521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500353 + ... + 2181684.

It is an arithmetic number, because the mean of its divisors is an integer number (119629414620).

Almost surely, 2^{1254344816642} is an apocalyptic number.

1254344816642 is a deficient number, since it is larger than the sum of its proper divisors (659725817278).

1254344816642 is a wasteful number, since it uses less digits than its factorization.

1254344816642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684985.

The product of its digits is 4423680, while the sum is 50.

The spelling of 1254344816642 in words is "one trillion, two hundred fifty-four billion, three hundred forty-four million, eight hundred sixteen thousand, six hundred forty-two".