101817242 has 4 divisors (see below), whose sum is σ = 152725866. Its totient is φ = 50908620.

The previous prime is 101817211. The next prime is 101817263. The reversal of 101817242 is 242718101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242718101 = 43 ⋅5644607.

It can be written as a sum of positive squares in only one way, i.e., 62742241 + 39075001 = 7921^2 + 6251^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25454309 + ... + 25454312.

Almost surely, 2^101817242 is an apocalyptic number.

101817242 is a deficient number, since it is larger than the sum of its proper divisors (50908624).

101817242 is an equidigital number, since it uses as much as digits as its factorization.

101817242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50908623.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 101817242 is about 10090.4530126253. The cubic root of 101817242 is about 466.9536519350.

The spelling of 101817242 in words is "one hundred one million, eight hundred seventeen thousand, two hundred forty-two".