247242868242742 has 8 divisors (see below), whose sum is σ = 392679849562056. Its totient is φ = 116349585055392.

The previous prime is 247242868242709. The next prime is 247242868242743.

247242868242742 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×247242868242742² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247242868242743) 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, 3635924532948 + ... + 3635924533015.

It is an arithmetic number, because the mean of its divisors is an integer number (49084981195257).

Almost surely, 2^{247242868242742} is an apocalyptic number.

247242868242742 is a deficient number, since it is larger than the sum of its proper divisors (145436981319314).

247242868242742 is a wasteful number, since it uses less digits than its factorization.

247242868242742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7271849065982.

The product of its digits is 308281344, while the sum is 64.

The spelling of 247242868242742 in words is "two hundred forty-seven trillion, two hundred forty-two billion, eight hundred sixty-eight million, two hundred forty-two thousand, seven hundred forty-two".