100531720742 has 8 divisors (see below), whose sum is σ = 154304501736. Its totient is φ = 49096886832.

The previous prime is 100531720741. The next prime is 100531720747. The reversal of 100531720742 is 247027135001.

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

It is a junction number, because it is equal to n+sod(n) for n = 100531720699 and 100531720708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100531720741) 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, 584486663 + ... + 584486834.

It is an arithmetic number, because the mean of its divisors is an integer number (19288062717).

Almost surely, 2^100531720742 is an apocalyptic number.

100531720742 is a deficient number, since it is larger than the sum of its proper divisors (53772780994).

100531720742 is a wasteful number, since it uses less digits than its factorization.

100531720742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168973542.

The product of its (nonzero) digits is 11760, while the sum is 32.

Adding to 100531720742 its reverse (247027135001), we get a palindrome (347558855743).

The spelling of 100531720742 in words is "one hundred billion, five hundred thirty-one million, seven hundred twenty thousand, seven hundred forty-two".