100666542 has 16 divisors (see below), whose sum is σ = 201444480. Its totient is φ = 33536952.

The previous prime is 100666523. The next prime is 100666547. The reversal of 100666542 is 245666001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100666547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11343 + ... + 18165.

It is an arithmetic number, because the mean of its divisors is an integer number (12590280).

Almost surely, 2^100666542 is an apocalyptic number.

100666542 is an abundant number, since it is smaller than the sum of its proper divisors (100777938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100666542 is a wasteful number, since it uses less digits than its factorization.

100666542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9287.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 100666542 is about 10033.2717495341. The cubic root of 100666542 is about 465.1878718244.

The spelling of 100666542 in words is "one hundred million, six hundred sixty-six thousand, five hundred forty-two".