247219912742 has 16 divisors (see below), whose sum is σ = 410239448064. Its totient is φ = 110789973000.

The previous prime is 247219912739. The next prime is 247219912829.

It is a happy number.

247219912742 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×247219912742² (a number of 24 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79134134 + ... + 79137257.

It is an arithmetic number, because the mean of its divisors is an integer number (25639965504).

Almost surely, 2^247219912742 is an apocalyptic number.

247219912742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

247219912742 is a deficient number, since it is larger than the sum of its proper divisors (163019535322).

247219912742 is a wasteful number, since it uses less digits than its factorization.

247219912742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158271475.

The product of its digits is 1016064, while the sum is 50.

The spelling of 247219912742 in words is "two hundred forty-seven billion, two hundred nineteen million, nine hundred twelve thousand, seven hundred forty-two".