247142702173439 has 4 divisors (see below), whose sum is σ = 247148561593560. Its totient is φ = 247136842753320.

The previous prime is 247142702173429. The next prime is 247142702173459. The reversal of 247142702173439 is 934371207241742.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247142702173439 is a prime.

It is a super-2 number, since 2×247142702173439² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247142702173429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2929646792 + ... + 2929731149.

It is an arithmetic number, because the mean of its divisors is an integer number (61787140398390).

Almost surely, 2^{247142702173439} is an apocalyptic number.

247142702173439 is a deficient number, since it is larger than the sum of its proper divisors (5859420121).

247142702173439 is an equidigital number, since it uses as much as digits as its factorization.

247142702173439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859420120.

The product of its (nonzero) digits is 14224896, while the sum is 56.

The spelling of 247142702173439 in words is "two hundred forty-seven trillion, one hundred forty-two billion, seven hundred two million, one hundred seventy-three thousand, four hundred thirty-nine".