1242738793479 has 8 divisors (see below), whose sum is σ = 1685069550720. Its totient is φ = 814450282616.

The previous prime is 1242738793477. The next prime is 1242738793489. The reversal of 1242738793479 is 9743978372421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242738793479 - 2¹ = 1242738793477 is a prime.

It is a super-2 number, since 2×1242738793479² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242738793477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3510561387 + ... + 3510561740.

It is an arithmetic number, because the mean of its divisors is an integer number (210633693840).

Almost surely, 2^{1242738793479} is an apocalyptic number.

1242738793479 is a deficient number, since it is larger than the sum of its proper divisors (442330757241).

1242738793479 is an equidigital number, since it uses as much as digits as its factorization.

1242738793479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7021123189.

The product of its digits is 128024064, while the sum is 66.

The spelling of 1242738793479 in words is "one trillion, two hundred forty-two billion, seven hundred thirty-eight million, seven hundred ninety-three thousand, four hundred seventy-nine".