100712642 has 8 divisors (see below), whose sum is σ = 151942716. Its totient is φ = 50065072.

The previous prime is 100712629. The next prime is 100712659. The reversal of 100712642 is 246217001.

It can be written as a sum of positive squares in 2 ways, for example, as 82828201 + 17884441 = 9101^2 + 4229^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145193 + ... + 145884.

Almost surely, 2^100712642 is an apocalyptic number.

100712642 is a deficient number, since it is larger than the sum of its proper divisors (51230074).

100712642 is a wasteful number, since it uses less digits than its factorization.

100712642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291252.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 100712642 is about 10035.5688428708. The cubic root of 100712642 is about 465.2588715419.

Adding to 100712642 its reverse (246217001), we get a palindrome (346929643).

The spelling of 100712642 in words is "one hundred million, seven hundred twelve thousand, six hundred forty-two".