100517842 has 4 divisors (see below), whose sum is σ = 150776766. Its totient is φ = 50258920.

The previous prime is 100517827. The next prime is 100517849. The reversal of 100517842 is 248715001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248715001 = 109 ⋅2281789.

It can be written as a sum of positive squares in only one way, i.e., 84107241 + 16410601 = 9171^2 + 4051^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100517842.

It is not an unprimeable number, because it can be changed into a prime (100517849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25129459 + ... + 25129462.

Almost surely, 2^100517842 is an apocalyptic number.

100517842 is a deficient number, since it is larger than the sum of its proper divisors (50258924).

100517842 is an equidigital number, since it uses as much as digits as its factorization.

100517842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50258923.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 100517842 is about 10025.8586664684. The cubic root of 100517842 is about 464.9587075523.

The spelling of 100517842 in words is "one hundred million, five hundred seventeen thousand, eight hundred forty-two".