1242918707679 has 48 divisors (see below), whose sum is σ = 1969437600000. Its totient is φ = 749098022400.

The previous prime is 1242918707677. The next prime is 1242918707711. The reversal of 1242918707679 is 9767078192421.

1242918707679 is a `hidden beast` number, since 1 + 2 + 429 + 1 + 8 + 70 + 76 + 79 = 666.

It is not a de Polignac number, because 1242918707679 - 2¹ = 1242918707677 is a prime.

It is a super-3 number, since 3×1242918707679³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242918707677) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26066542 + ... + 26114180.

It is an arithmetic number, because the mean of its divisors is an integer number (41029950000).

Almost surely, 2^{1242918707679} is an apocalyptic number.

1242918707679 is a deficient number, since it is larger than the sum of its proper divisors (726518892321).

1242918707679 is a wasteful number, since it uses less digits than its factorization.

1242918707679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49116 (or 49113 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 63.

The spelling of 1242918707679 in words is "one trillion, two hundred forty-two billion, nine hundred eighteen million, seven hundred seven thousand, six hundred seventy-nine".