247243342742 has 64 divisors (see below), whose sum is σ = 430280294400. Its totient is φ = 105447434400.

The previous prime is 247243342727. The next prime is 247243342751.

247243342742 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×247243342742² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247243342693 and 247243342702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7131983 + ... + 7166565.

It is an arithmetic number, because the mean of its divisors is an integer number (6723129600).

Almost surely, 2^247243342742 is an apocalyptic number.

247243342742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

247243342742 is a deficient number, since it is larger than the sum of its proper divisors (183036951658).

247243342742 is a wasteful number, since it uses less digits than its factorization.

247243342742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34889.

The product of its digits is 1806336, while the sum is 44.

It can be divided in two parts, 247243 and 342742, that added together give a palindrome (589985).

The spelling of 247243342742 in words is "two hundred forty-seven billion, two hundred forty-three million, three hundred forty-two thousand, seven hundred forty-two".