1242667317120 has 64 divisors (see below), whose sum is σ = 3961002079440. Its totient is φ = 331377950720.

The previous prime is 1242667317083. The next prime is 1242667317131. The reversal of 1242667317120 is 217137662421.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1242667317120² (a number of 25 digits) contains 22 as substring.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 323609361 + ... + 323613200.

Almost surely, 2^{1242667317120} is an apocalyptic number.

1242667317120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242667317120 is an abundant number, since it is smaller than the sum of its proper divisors (2718334762320).

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

1242667317120 is an equidigital number, since it uses as much as digits as its factorization.

1242667317120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647222583 (or 647222571 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 1242667317120 in words is "one trillion, two hundred forty-two billion, six hundred sixty-seven million, three hundred seventeen thousand, one hundred twenty".