101243115 has 80 divisors (see below), whose sum is σ = 195148800. Its totient is φ = 50061888.

The previous prime is 101243101. The next prime is 101243159. The reversal of 101243115 is 511342101.

It is not a de Polignac number, because 101243115 - 2⁵ = 101243083 is a prime.

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 in 79 ways as a sum of consecutive naturals, for example, 453894 + ... + 454116.

It is an arithmetic number, because the mean of its divisors is an integer number (2439360).

Almost surely, 2^101243115 is an apocalyptic number.

101243115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

101243115 is a deficient number, since it is larger than the sum of its proper divisors (93905685).

101243115 is a wasteful number, since it uses less digits than its factorization.

101243115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 101243115 is about 10061.9637745323. The cubic root of 101243115 is about 466.0743110631.

Adding to 101243115 its reverse (511342101), we get a palindrome (612585216).

The spelling of 101243115 in words is "one hundred one million, two hundred forty-three thousand, one hundred fifteen".