1242708364648 has 8 divisors (see below), whose sum is σ = 2330078183730. Its totient is φ = 621354182320.

The previous prime is 1242708364643. The next prime is 1242708364721. The reversal of 1242708364648 is 8464638072421.

It can be written as a sum of positive squares in only one way, i.e., 1161527818564 + 81180546084 = 1077742^2 + 284922^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1242708364648³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1242708364643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77669272783 + ... + 77669272798.

Almost surely, 2^{1242708364648} is an apocalyptic number.

It is an amenable number.

1242708364648 is a deficient number, since it is larger than the sum of its proper divisors (1087369819082).

1242708364648 is a wasteful number, since it uses less digits than its factorization.

1242708364648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155338545587 (or 155338545583 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 55.

The spelling of 1242708364648 in words is "one trillion, two hundred forty-two billion, seven hundred eight million, three hundred sixty-four thousand, six hundred forty-eight".