100845742 has 4 divisors (see below), whose sum is σ = 151268616. Its totient is φ = 50422870.

The previous prime is 100845721. The next prime is 100845799. The reversal of 100845742 is 247548001.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25211434 + ... + 25211437.

It is an arithmetic number, because the mean of its divisors is an integer number (37817154).

Almost surely, 2^100845742 is an apocalyptic number.

100845742 is a deficient number, since it is larger than the sum of its proper divisors (50422874).

100845742 is an equidigital number, since it uses as much as digits as its factorization.

100845742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50422873.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 100845742 is about 10042.1980661606. The cubic root of 100845742 is about 465.4637405452.

The spelling of 100845742 in words is "one hundred million, eight hundred forty-five thousand, seven hundred forty-two".